1. Craig, M. andHabermann, R. E. (1986),Consistency of magnitudes in the CALNET catalog (abstr.). EOS, Trans. Amer. Geophys. Union67, 1086.
2. Garza, R. andLomnitz, C. (1979),The Oaxaca Gap: A case history. PAGEOPH117, 1187?1194.
3. Guendel, F. andMcNally, K. (1981),Application of the seismic gap method to the seismicity of Costa Rica, Central America (abstr.). EOS, Trans. Amer. Geophys. Union62, 948.
4. Gutenberg, B. andRichter, C. (1954),Seismicity of the Earth and Related Phenomena, (Princeton University Press, Princeton, New Jersey).
5. Habermann, R. E.,Precursory seismicity patterns: Stalking the mature seismic gap InEarthquake Prediction: An International Review, Maurice Ewing Series, vol. 4, (ed. D. Simpson and P. Richards) (American Geophysical Union, Washington DC. (1981a)) pp. 29?42.