García-Abdeslem, J., and M. López Guzmán. 2009. “A Suggested Reverse Geomagnetic Polarity Event from the Panga De Abajo Magnetic Anomalies in Mexicali Valley, Baja California, Mexico”. Geofisica Internacional 48 (3):279-96. https://doi.org/10.22201/igeof.00167169p.2009.48.3.26.