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