Microbiological and physicochemical quality of water in four crater lakes in the state of Puebla, Mexico . Nexo Revista Científica, [S. l.], v. 34, n. 06, p. 1632–1648, 2021. DOI: 10.5377/nexo.v34i06.13124. Disponível em: https://camjol.info/index.php/NEXO/article/view/13124. Acesso em: 25 jun. 2026.