AGUILAR-SÁNCHEZ, G.; GONZÁLEZ-VIZCARRA, R. Zones with Potential for the Payment of Environmental Services in the Valle del Mezquital, Hidalgo. Revista de Estudios Andaluces, [S. l.], n. 38, p. 234–237, 2019. Disponível em: https://revistascientificas.us.es/index.php/REA/article/view/9828. Acesso em: 24 sep. 2021.