Steinich, B., Bocanegra, G., & Sánchez, E. (1999). Basement topography and fresh-water resources of the coastal aquifer at Acapetahua, Chiapas, Mexico . Geofísica Internacional, 38(2), 107–115. https://doi.org/10.22201/igeof.00167169p.1999.38.2.388