Ponce, I., K. C. Mcnally, V. Sumin De Portilla, J. González, A. del Castillo, L. González, E. Chael, y M. French. 1978. « Earthquake of 29 Noviember 1978: A Preliminary Report on Spatio-Temporal Pattern Oe Preceding Seismic Activity and Mainshock Relocation». Geofísica Internacional 17 (2):109-26. https://doi.org/10.22201/igeof.00167169p.1978.17.2.928.