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 AbstractPDF
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
Ionospheric perturbations associated with two huge earthquakes in Japan, using principal component analysis for multiple subionospheric VLF/LF propagation paths AbstractPDF