Revue,
T. FISCHER (Institute of Geophysics, Academy of Science, Prague, CZE;S. HAINZL (GeoforschungsZentrum Potsdam, Potsdam, DEU;L. EISNER (Microseismic Inc, Houston, Texas, USA;S. A. SHAPIRO (Fachrichtung Geophysik, Freie Universität, Berlin, DEU;J. LE CALVEZ (Schlumberger DCS, Addison, Texas, USA