MATTILA, P. K. Spring barley yield and nitrogen recovery after application of peat manure and pig slurry. Agricultural and Food Science, [S. l.], v. 15, n. 2, p. 124–137, 2006. DOI: 10.2137/145960606778644494. Disponível em: https://journal.fi/afs/article/view/5836. Acesso em: 5 may. 2024.