VIRTANEN, H.; NOUSIAINEN, J. Nitrogen and phosphorus balances on Finnish dairy farms. Agricultural and Food Science, [S. l.], v. 14, n. 2, p. 166–180, 2005. DOI: 10.2137/145960605774825984. Disponível em: https://journal.fi/afs/article/view/5806. Acesso em: 20 jul. 2024.