1. M. Hayakawa,Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes, edited by M. Hayakawa (Terra Science, Tokyo, 1999), p. 996.
2. Generation of ULF electromagnetic emissions by microfracturing
3. V. V. Surkov,Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes, edited by M. Hayakawa (Terra Science, Tokyo, 1999), p. 357.
4. Low-frequency magnetic field measurements near the epicenter of the Ms7.1 Loma Prieta Earthquake