, University of Electro-Communications, Research Station on Seismo-Electromagnetics, and Graduate School of Informatics and Engineering, Tokyo, Japan

• Annals of Geophysics Vol. 55 No. 1 (2012) - EARTHQUAKE PRECURSORS / Special Issue ed. by P.F. Biagi, M.E. Contadakis, M. Hayakawa and T. Maggipinto
  Possible precursor to the March 11, 2011, Japan earthquake: ionospheric perturbations as seen by subionospheric very low frequency/low frequency propagation
  Abstract  PDF