Greene II, H. W.; Burnley, P. C. (26 de octubre de 1989). «A new self-organizing mechanism for deep-focus earthquakes». Nature341 (6244): 733-737. Bibcode:1989Natur.341..733G. doi:10.1038/341733a0.
harvard.edu
adsabs.harvard.edu
Greene II, H. W.; Burnley, P. C. (26 de octubre de 1989). «A new self-organizing mechanism for deep-focus earthquakes». Nature341 (6244): 733-737. Bibcode:1989Natur.341..733G. doi:10.1038/341733a0.
usgs.gov
earthquake.usgs.gov
Spence, William, Stuart A. Sipkin, and George L. Choy (1989). "Measuring the Size of an Earthquake."Earthquake Information Bulletin (USGS).21 (1), 58–63.