1. Prof., Univ. of Southern California, Civ. Engrg. Dept., Los Angeles, CA 90089-2531.
2. Asst. Prof., Univ. of Montenegro, Civ. Engrg. Dept., Podgorica 81000, Yugoslavia.
3. Res., Assoc. Prof., Univ. of Southern California, Civ. Engrg. Dept., Los Angeles, CA 90089-2531.