Nationaløkonomisk Tidsskrift, Bind 129 (1991)EC's Common Agricultural Policy and Denmark: An applied general equilibrium analysisAT&T, 295 North Maple Ave, - Room 6138 F2, Basking Ridge, New Jersey 07920, USA Nathan Wajsman ResuméSUMMARY: The purpose of this paper is twofold: (1) to examine the microeconomic consequences for Denmark of an abolition of EC's Common Agricultural Policy, and (2) to illustrate the use of computable general equilibrium models and thereby encourage use of this methodology to analyze long-term policy problems in Denmark. The results in this study show that Denmark is a net beneficiary of the EC's agricultural supports and would suffer a welfare loss of between 2 and 4% if the CAP were abolished. 1. IntroductionDenmark's decision to join the European Community (EC) in 1972 was to a large degree motivated by the prospective benefits of EC's Common Agricultural Policy (CAP): mainly the opportunity to export agricultural products to European markets at high, guaranteed prices and to the rest of the world with export subsidies from Brussels.There little doubt that Danish agriculture has gained considerably from the CAP, as have other large agricultural export sectors in Holland, France and Ireland. Some attempts at quantifying these gains have been made. One can start with the European Agriculture Guidance and Guarantee Fund (EAGGF) amounts paid to Denmark;in the total was 7205.6 million DKR, composed of 4929.7 million in export subsidies, 1640.8 million in home market subsidies, and 635.1 million in interventionexpenses losses on products sold from EC stocks, storage expenses etc.)1. Of course, as Ølgaard (1987) points out, the main source of gains to Danish agriculture is the ability to sell products at high prices to other EC countries, which is not reflected in the EAGGF budget. Ardy (1988) estimates the total gain to Danish agriculture from 1. Danmarks Statistik (1985, Table 16.2). These amounts refer to the Guarantee Section of the EAGGF; in addition, small amounts were disbursed through the Guidance Section (the Guidance Section aid is designed promote structural improvements in agriculture in low-income areas of the Community and is thus of limited relevance to Denmark). The subsidies are partly offset by co-responsibility levies on dairy producers, the total net subsidy to Danish agriculture in 1984 was still in excess of 7 billion DKR. Side 183
the CAP to be
in order of 2.5% of GDP, or around 15 billion DKR2. Only
Ireland's gain Ardy's results point to potential problems for the CAP as seen from a Danish point of view, It has not gone unnoticed among Denmark's partners in the Community that the incidence of the CAP is such that one of the three wealthiest member countries reaps some of the greatest gains. Today, there are considerable internal and external pressures on the EC to reform the CAP. The demands by agricultural exporters outside the EC for reduced CAP export subsidies coupled with the ever-increasing budgetary burden of the scheme will effectively put a ceiling on total CAP expenditures in coming years. At the same time, low-income countries on the Community's periphery are demanding increased intra-EC transfers, both explicity through the regional funds and implicitly through reorientation of the CAP toward their products (this is especially true of Spain, Portugal, and Greece, whose products - mainly fruits and vegetables - have until now enjoyed much weaker protection under the CAP than meat, dairy and grain). Various proposals to reform the CAP have surfaced in recent years. One such proposal put forth in 1989 by the Socialist Group in the European Parliament, summarized de Veer (1989). This proposal would essentially abolish the CAP by scrapping its price-support mechanisms. EC prices would be allowed to fall to world levels, and any aid to farmers would take the form of direct income support, financed in part nationally in part by the Community, depending on the country's »ability to pay«, i.e. GDP per capita. Based on partial equilibrium analysis, and assuming a 20% decline in EC agricultural prices following CAP liberalization3, de Veer estimates that Danish farmers would suffer a loss in income equal to 22% of value added, while the impact on the economy would be a loss of 0.19% of GDP4. According to de Veer's calculations, and Holland would also lose under the Socialist proposal. A similar partial equilibrium analysis was carried out by Thomson (1989), using a very disaggregated model. The impact of complete CAP liberalization on Denmark was also negative in this study, namely -0.79% of GDP. Again, there is a net loss because the producers' loss more than offsets the consumers' and taxpayers' gains. 2. It must be stressed, however, that Ardy does not assess the impact of the CAP on the economy as a whole. estimates of agricultural gain are calculated as the sum of EAGGF transfers and the difference between EC and world prices multiplied by net exports. They ignore the negative impact of high food prices consumer welfare and the distorting effect on other sectors via higher factor prices. 3. Since de Veer assumes that current world prices are 40% below EC prices, this implies that CAP liberalization cause world prices to increase by 33%, a somewhat larger impact than in most other studies. 4. The loss to agriculture is 0.95% of GDP; the gains to consumers and taxpayers are 0,39% and 0.37%, respectively, for a net loss of 0.19%. Side 184
Danish politicians and economists as well as the general public have historically tended focus on the advantage accruing to the agricultural sector from EC policies rather than on the total effect of those policies. In particular, as Ølgaard (1987) notes, the costs borne by consumers through high food prices have seldom been mentioned. This probably is a reflection of the strength of the agriculture lobby and the importance of the rural tradition in Danish culture. However, it appears that now there is a recognition Denmark that the Common Agricultural Policy is likely to be reformed in the coming years, and in this context »reform« means lower prices for Danish agricultural products. In fact, Larsen (1988) concludes that Denmark ought to concentrate not on trying to maintain high prices for its products but on preserving access to its export markets. Given the important role played by the prospect of higher agricultural exports in Denmark's decision to join the EC in 1972, it is somewhat surprising that few formal Danish analysis of the CAP's effects on the economy have been published to date. Danish Economic Council (1971) is still the most comprehensive study in this area, but it suffers from a lack of even partial equilibrium analysis; the advantages for Danish agriculture were estimated using 1970-71 quantities and the then new, higher EC prices. purpose of this paper is to begin remedying that deficiency by analyzing the impact on Denmark's economy of a complete abolition of EC's agricultural price supports a simple computable general equilibrium (CGE) model.5 2. The modelThe model used
for the analysis is a small CGE model of the
Shoven-Whalley type. The economy is divided into three producing sectors: agriculture and food processing, and services. Four institutional sectors are distinguished: households, the government, and the foreign sector. There are nine consumer goods and four investment goods in the model; these goods are fixed-coefficients aggregates of the produced goods (i.e., each consumer and investment good is a linear combination of the three produced goods). Table 1 summarizes the produced goods and the consumption and investment categories and their acronyms, which will be used in the remainder of the paper. In what follows, the produced goods are referenced by the index / (i=1,2,3); the index j (/^ 1,2,3,4) refers to investment categories, and the index c (c=\,...,9) refers to consumption categories. 5. For a brief introduction to CGE models and their evolution during the past 20 years, see Wajsman (1991), Shoven and Whalley (1984) provide a comprehensive survey of CGE model applications. Side 185
Each sector produces value added using a Cobb-Douglas production function with constant returns to scale for the two primary factors, labor and capital, while intermediate is modeled with a Leontief fixed-coefficients specification. Capital is sector-specific immobile so that rates of return are not equalized across sectors. Labor, on the other hand, is fully mobile. The labor market is thus neoclassical, with full employment and wage rate equalization across sectors. Households receive all labor income as well as a share of capital income, in addition to government transfer payments and some factor income from abroad. They maximize a Stone-Geary utility function, yielding a Linear Expenditure System (LES)6 as the consumption demand system, and they save a fixed proportion of their after-tax income.Corporations a share of capital income and save a fixed proportion, correspondingto earnings. Government income is the sum of tax receipts from personalincome corporate taxes, VAT and other indirect taxes, any profits from stateownedenterprises, 6. The LES is described in all standard works on consumption demand; see, for example, Deaton and Muellbauer(l9Bo). Side 186
ownedenterprises,and import
tariffs less export subsidies. Finally, the foreign
sector's The portions of the model outlined so far conform closely to the traditional Walrasian with the exception of sector-specific capital stocks. However, when modeling transactions, it is almost always necessary to depart somewhat from the standard Hecksher-Ohlin-Samuelson (henceforth H-O-S) theory. The problems is applying H-O-S in empirical models stem from the use of constant returns to scale in production coupled with the small country assumption on the export and import side. The small country assumption says that the country cannot influence world prices of the commodities it imports or exports by its actions - clearly, a reasonable for a country like Denmark, especially considering the level of aggregation the model. However, as shown in Dervis, de Melo and Robinson (1982, Ch. 6), the small country assumption in its pure form in a model with more traded goods than factors of production and constant returns to scale results in complete specialization M goods, where M is the number of factors. The assumption of sectorspecific stocks prevents complete specilization from happening - in effect, it increases the number of factors. However, the model will still show excessive responsiveness changes in terms of trade, such as exogenous changes in world prices7. In addition, the assumption of homogenous products in H-O-S theory is empicically problematic it does not allow for two-way trade.B The way to overcome these difficulties is to abandon the assumption of perfect substitutability domestic and imported goods. Once product differentiation is introduced, small country assumption may no longer be appropriate on the export side. With differentiated products, even a small country may face downward-sloping demand curves for its products. Accordingly, the export demands are assumed to have the following form: (1) where E( is the
export demand for sector i's output, PWt is the
exogenous world price of 7. For an example of this phenomenon, see Clarete and Roumasset (1987) who employ a model with homogeneous and sector-specific factors to analyze effects of tariffchanges in the Philippines. 8. Two-way tråde (sometimes called cross-hauling) refers to the simultaneous import and export of the same good. It has been observed in commodities at extremely disaggregated levels; to account for it without to product differentiation would require a model with thousands of commodities. Side 187
PWEt = PWj, and £, is the elasticity of export demand. Thus, the small country assumptionhas retained in the sense that Denmark still cannot influence the world price PW{, however, Denmark's market share in its export markets depends on how competitive Danish exporters are, measured by the ratio of their supply price to the world price. The supply price of exports depends on Danish domestic prices and trade policy: (2) where PDi is the domestic price of good i, tet is the rate of export subsidy, and ER is the exchange rate (measured as the domestic price of foreign currency, e.g. DKR/$). It is assumed that Danish producers are indifferent between exporting and selling in the domestic market, so export supply is defined implicitly and residually as the difference between production and domestic sales. On the import side, following the suggestion af Armington (1969), these is imperfect between imported and domestic goods. In the model, I thus assume that in each sector, foreign and Danish goods are combined to form a composite commodity, a CES aggregation function: (3) where Mt and Dt
are imported and domestically produced commodities,
respectively, (4) where Gi, = (1/1 + pj is the elasticity of substitution between imported and domestic goods. This specification has three interesting special cases: for o- = o, there is no substitutionbetween and domestic goods - this is the case of »non-competitive imports« sometimes used in models of developing countries to describe imports of, say, essential investment goods not manufactured domestically; for o; = 1, (4) reduces to a Cobb-Douglas specification, and the value share of imports remains constant; and Side 188
Gj —> o«
represents the case of perfect substitutability between
imports and domestic The import price
measured in DKR, PMb is a reflection of exogenous world
prices (5) where tmt is the
tariff rate on imports of good /. Given the import
demand function, the (6) It should be noted that I have implicitly assumed that the elasticity of substitution between imported and domestic goods of a given category is the same for all uses. Purchasers intermediate products, consumer goods, and investment goods are confronted this composite price, and the concepts of net price and consumption and investment prices can now be defined. The net price in producing sector / is defined (7) where tpt is the
indirect tax rate on production and the ak( are the
input-output coefficients. (8) (8) where tcc and vcc
are the excise tax and VAT rates on the c'th consumption
good, tij is Side 189
Every CGE model must include a mechanism to determine the overall level of economic this is referred to as the macroeconomic closure. In the present model, total investment and government comsumption are endogenous, while foreign savings (i.e., the current account balance) and government savings (i.e., the budget surplus or deficit) are exogenous. Such a model is said to be »savings-driven«. While other macroeconomic are possible9, the specification chosen here closely mirrors the situation of Danish policymakers who often operate under constraints on the politically acceptable sizes of the current account and government budget deficits. The exchange rate, defined as the domestic price of foreign currency, is fixed and serves as the numeraire. 3. Model implementationThe implementation of the model is based on a Social Accounting Matrix (SAM) for 1984.10 A SAM is a concise way to describe the structure of an economy and is particularly well suited for CGE models. The key concept in the SAM is the »institution«. institution can be a producing or consuming sector, a group of commodities, or the rest of the world. The SAM is essentially an augmented input-output table, with one row and one column corresponding to each institution. Per convention, the columns the SAM make payments to the rows, and each account balances, i.e., the sum of payments made by each institution is equal to the sum of payments received by it. The HERCULES software package described in Drud and Kendrick (1988) was used to calibrate and solve the model. From the modeler's standpoint, HERCULES is extremely easy to use, because there is no need to write down any equations. The base SAM is used to define the model and calibrate most of the model parameters. The numbers in the SAM are values, i.e., they are mostly payments of the form price*quantit 11. Calibration in the SAM is made possible by assuming that in the base case, all prices are unity. This method was pioneered by Harberger (1962). The payments in the base SAM can now be interpreted as quantities, where appropriate, and the model can be calibrated. The SAM is
transformed into a model once functional forms for the
payments in the 9. For example, government consumption could be exogenous in real terms, implying that the government has an activity plan which will be carried out regardless of cost. Investment could also be fixed; such a closure yields an »investment-driven« model in which savings from abroad and the government adjust to ensure macroeconomic balance. 10. For an introduction to Social Accounting Matrices, see King (1981). The use of SAMs in CGE models is discussed in Dervis, de Melo and Robinson (1982), Pyatt (1988) and Kendrick (1990), among others. 11. Of course, certain payments, such as government transfers or the current account deficit, do not have associated prices or quantities. Side 190
which cannot be calibrated from the data are furnished by the modeler (in this case, the LES parameters and the trade elasticities). Once this is done, HERCULES generates the equations of the model, performs error checking, calibrates the model parameters, and performs the experiments requested. The majority of the parameters of the model can be inferred directly from the base SAM12. For example, the Cobb-Douglas share parameters are simply the factor shares of base value added. Table 2 shows the production parameters for the 3 producing sectors, the At are the Cobb-Douglas efficiency parameters and the at are the capital share parameters. Thus, the
agricultural sector is relatively capital-intensive,
while the industrial and The input-output
coefficients aih showing the intermediate input
requirements per As one might expect, the services sector has the highest value added ratio, while agriculture has the lowest. The relatively small difference between agriculture and industry in the definition of agriculture to include food processing; thus the value added to farm products during food processing is here assigned to agriculture. Three groups of
parameters cannot be calibrated from the SAM: the LES
parameters,the 12. The basic data sources used for the construction of the SAM were Danmarks Statistik (1988, 1989). Space limitations preclude the presentation of the base SAM in this article. However, all the data used in this study as well as computational details are available from the author on request. Side 191
Side 192
rametersyc and j3c (corresponding to committed expenditure and the marginal consumptionshares) chosen so as to yield reasonable own-price and income elasticitiesof based on literature estimates, particularly Danish Economic Council (1980). In practice, this was done by choosing appropriate yc's; given those, the J3c's could be calculated by HERCULES.I3 Table 4 shows the LES parameters and the incomeand elasticities for the 9 consumption categories. For the two parameters related to foreign trade, £, in Equation (1) and ct in Equation (4), values deemed reasonable were chosen in a somewhat ad hoc manner. There have been virtually no Danish studies upon which the estimation of these elasticities could be based. Knudsen (1989) estimated the export demand elasticity for Danish manufacturing be 2.5. Since agricultural products may be presumed to be more homogenous, and services less homogenous than industrial products, I have chosen e to be 5.0 for agriculture and 1.0 for services. Based on similar homogeneity considerations, the trade elasticity crwas set at 3.0 for agriculture, 1.0 for industry, and 0.5 for services.14 This procedure for selecting the trade parameters is obviously less than satisfactory, but in view of the shortage of reliable econometric estimates it remains the only feasible method for most CGE applications. 4. Simulations of abolition of the CAPAbolition of the Common Agricultural Policy would have several direct effects on the Danish economy. As discussed above, the CAP has kept agricultural prices within the EC considerably above world prices. In addition, the EAGGF subsidizes agriculturalexports countries outside the EC, thereby exerting a depressing influence on world prices. Hence, from Denmark's point of view, abolition of the CAP would have three main effects: (1) export and import prices of agricultral products would decline to the world level; (2) mitigating this somewhat, world prices would rise due to the declinein net exports; and (3) Denmark would no longer receive the EAGGF subsidies. Accordingly, I conduct four experiments. In all four experiments, the EAGGF subsidies,equal 6.802 billion DKR in the base SAM,15 are set to 0, thus increasing the government's net transfers abroad by that amount. The experiments differ in their assumptions about the movement in world prices following CAP liberalization. In Experiment 1, world prices are unchanged; in Experiment 2, they rise by 10% followingCAP 13. The income elasticity in the LES is given by ey = Pc/wc, where wc is the budget share of the c'th consumption good. Thus, given the desired income elasticities, preliminary /?c's can be computed as f$c = ey * wc. The yc's can then be calculated by solving the 9-equation system yc = Y*[wc-/3C * (Y- Xyc) /Y] (c=1,...,9). Note that this formulation assumes Pc=\ for all c, as is the case in the base SAM. For further details, see Deaton and Muellbauer (1980, Ch. 3). 14. Equation (4) also contains the parameter <5,. Once the substitution elasticity is specified, <5( is easily calculated in the base SAM (remembering thatPD, = PMt =las \l[(Mt/Di)Ala + \]. 15. Specifically, 5.034 billion DKR in export subsidies and 1.768 billion DKR in production subsidies. Side 193
lowingCAPabolition, and in Experiment 3 the increase is 20%. Finally, in Experiment 4, world prices rise to a level sufficiently high so that Denmark's export and import pricesare by the liberalization. This last scenario is obviously not very realistic,but was included as an extreme case.16 I also assume that the EC subsidies lost would not be replaced by any additional agricultural support scheme. The aggregate welfare measure used in evaluating the results of the policy changes is total domestic absorption - i.e., the sum of household consumption, investment, and government consumption. In concrete terms, I have assumed that current EC prices are 50% above world prices, reasonable guess given the results cited in Rosenblatt et al. (1988) and elsewhere. Experiment 1 then translates into a 33% drop in the prices confronting Danish agriculture CAP liberalization; Experiments 2 and 3 imply a 27% drop and a 20% drop, respectively, while Experiment 4 implies unchanged external prices17. Table 5 shows the resulting price changes. Obviously, prices of agricultural commodities - domestic, exports, and imports-decline; decline diminishes when world prices increase. In fact, in Experiment 4, with the world price rising to the original EC level, PWEAG increases slightly. To understand this seemingly paradoxical result, one must keep in mind that the domestic and export prices are jointly determined by the interaction of the domestic supply curve and the domestic and foreign demand curves. The reduction in export subsidies has an effect equivalent to a downward shift of the foreign demand curve and puts downward pressure price. The reduction in production subsidies is equivalent to an increase in production and thus shifts the supply curve upwards, which tends to increase price (however, since the production subsidies in the base care are relatively small, this effect is minor). Finally, the increase in the exogenous world price is equivalent to an upward shift in the foreign demand curve. In Experiment 4, due to a large increase in the world price, this last effect dominates and PWEAG rises. Domestic and export prices for industry and services also decline, partly due to the lower cost of intermediate inputs from agriculture, and partly due to lower labor costs, which benefit both industry and services. As one might expect, with fixed sectoral capital the price of agricultural capital declines sharply. Prices of
consumer goods consequently decline. The overall price
index (i.e., the price 16. In fact, some authors, such as Sørensen and Pultz (1986), speculate that world prices would indeed rise enough to maintain constant export prices for Denmark. 17. The calculations are as follows: if Danish agriculture currently sells its products at 1.5 times world prices, world prices are unchanged following abolition of the CAP, then the decline in price as seen from Denmark will be (1.5-1.0)71.5, or 33%. Similarly for the other cases. Side 194
indicating a
falling real wage. Naturally, the consumer categories
with the highest percentageof Table 6 shows the
impact of the experiments on various quantities in the
economy. Household consumption increases for most commodities and in the aggregate (except in Experiment 4). The increase in food consumption is relatively small despite the fall in its relative price, due to low own-price and income elasticities of demand for food. The increase is greatest for beverages and tobacco; although the demand for those is also inelastic, it is much less so than for food, and the relative price of BT falls almost as much as that of food. Consumption of
commodities which have high industry input coefficients
- clothing Side 195
lerpercentages,so that their relative prices increase. Consumers respond to this by reallocating their consumption away from those goods. The small decline in the price of industry-dependent consumer goods is in turn a consequence in the relatively small decline in industrial commodity prices, which increases their relative price compared to agricultural and service goodslß. The services sector declines somewhat, due to the large cut in government consumption the smaller fall in private investment needed to maintain macroeconomic balancel9. Because of the decline in services, a labor-intensive sector, the price of labor declines considerably. This, along with the lower agricultural prices, benefits industry, and the industrial sector expands production and exports. This is largely because the export demand for its products is elastic, and hence the decline in PWE leads to strong export expansion. Since import prices do not change (this is the small country assumption), price movements imply a reduction in the relative price of domestic versus foreign industrial goods - in other words, Danish industry becomes more competitive, both on world markets and at home. Therefore, imports decline while exports increase. Agricultural exports, imports, and production decline sharply, especially exports. This holds true even when world prices of agricultural products are assumed to rise to the internal EC level, because even in that case there is still the effect of the abolition of production subsidies to agriculture. In summary, CAP
liberalization has a large negative impact on the
agriculture sector, 5. ConclusionsThe preceding section shows that if the reductions in government spending needed to maintain the current account and government deficits at constant levels are taken into account, CAP liberalization is unambiguously welfare-reducing for Denmark, at least in this static model. Total domestic absorption declines between 2 and 4%, dependingon behavior of world prices following the abolition of agricultural suppor 20. In the most realistic scenarios (Experiments 2 and 3, in which world prices increaseby 18. If the transition from produced goods to consumer goods had been modeled in a way which allows substitution (rather than the fixed-coefficients approach used here), the impact of relatively higher industrial om consumer goods prices would have been smaller. 19. Investment is actually services-intensive because a large portion of it is construction. 20. The model was run with varying macroeconomic closures and exchange rate specifications, including one with a flexible exchange rate. The results from that model were broadly similar to those presented here. Only when the model was investment-driven (i.e., investment and government consumption were exogenous), did abolition of the CAP yield a small welfare improvement, but at a cost of considerable deterioration in the external and internal balances. The relative distribution of gains and losses across sectors not vary from the results of the savings-driven model. Side 196
creaseby10 and
20%, respectively), the small increase in private
consumption is more Given the level of aggregation of the model used in this study and the inherent limitations static CGE models, the precise size of the numerical estimates of the effects of the CAP policy changes should be taken with a grain of salt. Nevertheless, the results sufficiently convincing that further investigation of the effects of the CAP in the Danish economy is warranted. Although outright abolition of the CAP must be said to be in the realm of speculation at this time, some form of CAP reform will probably occur due to the internal and external pressure on the EC. Indeed, as mentioned above, during the second half of the 1980s, tentative steps toward reform have already been taken. Whether reform takes the form of increased quantity management of agricultural (as in the dairy sector), through lower guaranteed prices, or through some other scheme such as direct payments to farmers, there is no doubt that the changes made will not be favorable to Denmark21. The results presented here are in broad agreement with the general perception, which points to Denmark (along with Holland and Ireland) as one of the big beneficiares of the CAP in its current form. Given the country's high GDP per capita, Denmark is unlikely to encounter much sympathy from its EC partners in future negotiations over CAP reform. 21. One concrete and very recent example is the proposal by the EC Agriculture Commissioner, Ray MacSharry (see »Europe's Latest Farming Muddle«, The Economist, 23 February 1991), to move away from price support toward direct income supplements for small farmers. Since Danish farms tend to be large compared to the EC average, this change would undoubtedly hurt Danish agriculture. References:Ardy, B. 1988. The National Incidence of the European Community Budget. Journal of Common Market Studies, vol. XXVI, 401-429. Armington, P.
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Statistik. 1988. Input-output tabeller Danmarks Statistik. 1989. Nationalregnskab, offentlige finanser og betalingsbalance. Statistiske Efterretninger, vol. 7, nos. 13 and 21. Copenhagen. Deaton, A. and
Muellbauer, J. 1980. Economics Dervis, K.; De
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Mayer, T; Bartholdy, K.; De- mekas, D.; Gupta, S. and Lipschitz, L. 1988. The Common Agricultural Policy of the European Community. IMF Occasional Paper No. 62. Washington: International Monetary Fund. Shoven, 18. and Whalley, J. 1984. Applied General Equilibrium Models of Taxation and International Trade: An Introduction and Survey. Journal of Economic Literature, XXII, 1007-1051. Sørensen, C. H.
and Pultz, N. 1986. De Europæiske Thomson, K.J. 1989. Budgetary and Economic of CAP Trade Liberalization, In Agricultural Trade Liberalization and the European Community, eds. Secondo Tarditi, Kenneth J. Thomson, Pierpaolo Pierano and Elisabetta Croci-Angelini, 110-119. Oxford. Wajsman, N. 1991. EC's Internal Market and Denmark: An Applied General Equilibrium PhD dissertation, University of Florida. Ølgaard, A. 1987.
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