1. Dogra Chair Professor, Dept. of Civil Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110 016, India.
2. Professor, Dept. of Civil Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110 016, India.
3. Director, CSMRS, Hauz Khas, New Delhi 110 016, India.
4. Assistant Professor, Department of Civil Engineering, R.E.C., Hamirpur.