Nieto O., J., Delgado, L. y Damon, P.E. 1985. Geochronologic, petrologic, and structural data related to large morphologic features between the Sierra Madre Occidental and the Mexican Volcanic Belt. Geofísica Internacional. 24, 4 (oct. 1985), 623–663. DOI:https://doi.org/10.22201/igeof.00167169p.1985.24.4.2181.