FRIEDEL, Jürgen K. Influence of soil management practices and substrate availability on microbial biomass and its activities in some haplic Luvisols. Revista Mexicana de Ciencias Geológicas, [S. l.], v. 13, n. 2, p. 221–227, 2019. Disponível em: https://rmcg.unam.mx/index.php/rmcg/article/view/1163. Acesso em: 20 apr. 2025.