1. Magnitude and energy of earthquakes;Gutenberg;Ann. Geofis.,1956
2. Electric and magnetic approach to earthquake prediction;Honkura,1981
3. Relations between the eruptions of various volcanoes and deformations of the ground surface around them;Mogi;Bull. Earthquake Res. Inst., Univ. Tokyo,1958
4. Regression analysis of reported earthquake precursors I. Presentation of data;Niazi;Pure Appl. Geophys.,1984