P. SVEISTRUP, P. Koopmans, T.: TANKER FREIGHT RATES AND TANKSHIP BUILDING. An Analyses cyclical fluctuations. Haarlem & London 1939. Nationaløkonomisk tidsskrift, [S. l.], v. 3, 1940. Disponível em: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/60080. Acesso em: 17 may. 2024.