1. PhD Researcher, Dept. of Engineering, Univ. of Cambridge, Schofield Centre, High Cross, Madingley Rd., Cambridge CB3 OEL, UK.
2. Technion-Churchill College Exchange Post Doctoral Researcher, Dept. of Engineering, Univ. of Cambridge, Schofield Centre, High Cross, Madingley Rd., Cambridge CB3 OEL, UK.
3. Reader in Geomechanics, Engineering Dept. Univ. of Cambridge, Trumpington St., Cambridge CB2 1PZ, UK.
4. Professor of Geotechnical Engineering, Dept. of Engineering, Univ. of Cambridge, Trumpington St., Cambridge CB2 1PZ, UK.