1. Res. Assoc., Lab. of Hydr. Constr., Swiss Fed. Inst. of Technol., EPFL-LCH, CH-1015 Lausanne, Switzerland.
2. Prof., Dept. of Civ. Engrg., Lab. of Hydr. Constr., Swiss Fed. Inst. of Technol., EPFL-LCH, CH-1015 Lausanne, Switzerland.
3. Res. Assoc., Lab. of Hydr., Hydro. and Glaciology, Swiss Fed. Inst. of Technol., ETHZ-VAW, CH-8092 Zurich, Switzerland.