SIRÉN, J. An econometric model of beef production for optimization purposes. Agricultural and Food Science, [S. l.], v. 50, n. 5, p. 399–444, 1978. DOI: 10.23986/afsci.71990. Disponível em: https://journal.fi/afs/article/view/71990. Acesso em: 23 nov. 2024.