M. Hayakawa
Chiba Institute of Technology
O. Molchanov
Russian Scientific Center of Radiology and Surgical Technologies
K. Hattori
National Central University
В. Н. Чебров
Geophysical Survey
S. Uyeda
Earthquake Engineering Research Institute
В. В. Сурков
Schmidt Institute of Physics of the Earth
A. Schekotov
Schmidt Institute of Physics of the Earth
V. A. Gladyshev
Russian Academy of Sciences
E. N. Fedorov
Schmidt Institute of Physics of the Earth
E.A. Uy
King Saud University
Russian Academy of Sciences
Schmidt Institute of Physics of the Earth
University of Electro-Communications
Tokai University
Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation
Space Research Institute
Chiba Institute of Technology
Shimizu (Japan)
Geological Survey of Japan
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Geological Survey of India