1. Member, ASCE
2. Res. Assoc., Inst. of Theoretical and Appl. Mech., Prosecka 76, Prague 9, Czech Republic.
3. Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, Canada V6T 1Z4.
4. Assoc. Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, Canada V6T 1Z4.