GJAE. Wirtschaftszahlen. German Journal of Agricultural Economics, [S. l.], v. 59, n. 1, 2010. DOI: 10.52825/gjae.v59i1.1774. Disponível em: https://www.tib-op.org/ojs/index.php/gjae/article/view/1774. Acesso em: 25 nov. 2024.