SALO, M.-L. Lignin studies II. The lignin content and properties of lignin in different materials. Agricultural and Food Science, [S. l.], v. 29, n. 1, p. 202–210, 1957. DOI: 10.23986/afsci.71426. Disponível em: https://journal.fi/afs/article/view/71426. Acesso em: 7 jul. 2024.