1. Senior Research Engineer, Versuchsanstalt für Wasserbau und Wasserwirtschaft, Technical University Munich, D-82432 Obernach/Walchensee, Germany; formerly, Institute for Hydromechanics, Univ. of Karlsruhe, Kaiserstr.12, D-76128 Karlsruhe, Germany.
2. Professor, Institute for Hydromechanics, Univ. of Karlsruhe, Kaiserstr. 12, D-76128 Karlsruhe, Germany.