Flores-Márquez, E.L., Chávez, R.E., Martínez-Serrano, R.G., Herrera-Barrientos, J., Tejero-Andrade, A. y Belmonte, S. 2001. Geophysical characterization of the Etla Valley aquifer, Oaxaca, Mexico. Geofísica Internacional. 40, 4 (oct. 2001), 245–257. DOI:https://doi.org/10.22201/igeof.00167169p.2001.40.4.408.