Estrada-Medina, Hector, and Oscar Omar Álvarez-Rivera. “Geographic Distribution and Characteristics of the Physical Environment of the Mexican Karst”. Acta Universitaria 34 (April 10, 2024): 1–26. Accessed May 5, 2026. https://www.actauniversitaria.ugto.mx/index.php/acta/article/view/3840.