KIVINEN, E.; KAILA, A. Peat as a source of nitrogen for plants in pot culture. Agricultural and Food Science, [S. l.], v. 30, n. 1, p. 223–232, 1958. DOI: 10.23986/afsci.71455. Disponível em: https://journal.fi/afs/article/view/71455. Acesso em: 5 jul. 2024.