Affiliation: | (1) Institute of Geophysics, University of Warsaw, Poland;(2) Geophysical Institute, Acad. Sci. Czech Rep., Boní II/1401, 141 31 Prague 4, Czech Republic;(3) University of Texas at El Paso, USA;(4) Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland;(5) Institute of Rock Structure and Mechanics, Prague, Czech Republic;(6) Eötvös Loránd Geophysical Institute, Budapest, Hungary |