STÄHLIN, A. Über die Rolle des Stickstoffs im Futterbau. Agricultural and Food Science, [S. l.], v. 36, n. 1, p. 38–49, 1964. DOI: 10.23986/afsci.71615. Disponível em: https://journal.fi/afs/article/view/71615. Acesso em: 1 dec. 2021.