VAINIKAINEN, V. Cross-breeding Finnish sheep with Schwartzkopf rams. Agricultural and Food Science, [S. l.], v. 18, n. 1, p. 50–62, 1946. DOI: 10.23986/afsci.71191. Disponível em: https://journal.fi/afs/article/view/71191. Acesso em: 17 jul. 2024.