1. Earthquake mechanism;Aki;Tectonophysics,1972
2. The local magnitude ML of the Kern County earthquake of July 21, 1952;Bolt;Bull. Seismol. Soc. Amer.,1978
3. Point Mugu, California, earthquake of 21 February 1973 and its aftershocks;Ellsworth;Science,1973
4. Magnitudes of great shallow earthquakes from 1904–1952;Geller;Bull. Seismol. Soc. Amer.,1977
5. Gutenberg, B., , C. F., Richter, , Seismicity of the Earth, 2nd ed. Princeton University Press, Princeton, N.J., 1954,