Instituto Nacional de Prevención Sísmica
US Geological Survey Earthquakes
http://earthquake.usgs.gov/earthquakes/
Incorporated Research Institutions for Seismology
http://www.iris.washington.edu
International Seismological Centre
Centro Regional de Sismología para América del Sur
http://www.ceresis.org/portal/index.php
Asociación Argentina de Geofísicos y Geodestas
International Association of Seismology and Physics of the Earth´s Interior
http://geophysics.eas.gatech.edu/classes/SAC/
http://www.iris.edu/software/sac/manual.html
http://www.ceri.memphis.edu/people/langston/sactalk/sactalk.html