MONGE-NÁJERA, J.; GONZÁLEZ, M. I.; RIVAS ROSSI, M.; MÉNDEZ, V. H. A new method to assess air pollution using lichens as bioindicators. Revista de Biología Tropical, [S. l.], v. 50, n. 1, p. 321–325, 2002. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/16290. Acesso em: 3 may. 2024.