XXI EGS General Assembly, The Hague, May 6-10, 1996.
XXV ESC General Assembly, Reykjavík, September 9-14, 1996.
Institut de Physique du Globe, Paris, September 30, 1996 (meeting of
Maurizio Bonafede, Ágúst Gudmundsson, Jacques Angelier and Francoise
Bergerat).
PRENLAB workshop, Paris, October 24-25, 1997.