SELENIUS, H. Nya rön om bladanalysens användning. Agricultural and Food Science, [S. l.], v. 44, n. 4, p. 258–265, 1972. DOI: 10.23986/afsci.71831. Disponível em: https://journal.fi/afs/article/view/71831. Acesso em: 12 apr. 2025.