Contact Address:  Institute of Geodynamics of the Romanian Academy  19-21, J.L. Calderon St. RO-020032, Bucharest-37 ROMANIA  Phone: (+40) 21 3172127 Fax: (+40) 21 3172120 E-mail: crisan@geodin.ro; gmaris@geodin.ro; marilena@geodin.ro; venera@geodin.ro