1. Hydraulic Engineer, Lahmeyer International GmbH (LI), Friedberger Strasse 173, 61118 Bad Vilbel, Germany; formerly, Research Engineer, VAW, ETH-Zurich, CH-8092 Zurich, Switzerland.
2. Professor, Head, Hydraulic Engineering Div., Laboratory of Hydraulics, Hydrology and Glaciology (VAW), Swiss Federal Institute of Technology (ETH Zurich). ETH Zurich, CH-8092, Zurich, Switzerland.
3. Professor, Director VAW, ETH Zurich.