Mirosław Lachowicz
Institute of Applied Mathematics and Mechanics
Faculty of Mathematics, Informatics and Mechanics
Warsaw University, ul. Banacha 2,
PL-02-097 Warsaw, POLAND
tel. (48-22)-554-44-65; fax (48-22)-554-43-00
e-mail: lachowic@mimuw.edu.pl
Polish co-ordinator of MRTN-CT-2004-503661