Rasmussen, Kjeld. “Analysis of Agricultural Energy Systems. R.M. Peart & R.C. Brook (eds.). - (Energy in World Agriculture; 5)”. Geografisk Tidsskrift - Danish Journal of Geography 93 (January 1, 1993). Accessed December 7, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/42240.