1. Research Assistant, Laboratory of Soil Mechanics, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
2. Postdoctoral Research Associate, Laboratory of Soil Mechanics, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
3. Professor, Laboratory of Soil Mechanics, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015 Lausanne, Switzerland (corresponding author).