1. Professor, Dept. of Civil Engineering, North Carolina State Univ., Raleigh, NC 27695.
2. Professor, Dept. of Civil & Environmental Engineering, Univ. of Wisconsin, Madison, WI 53706.
3. Professor, Dept. of Civil Engineering, Univ. of Sherbrooke, Sherbrooke, Québec, Canada, J1K 2R1.
4. Reader, Civil and Mechanical Engineering Division, Univ. of Warwick, Coventry CV4 7AL, U.K.
5. Associate Professor, Division of Structural and Geotechnical Eng., Hokkaido Univ., Sapporo 060-8628, Japan.
6. Professor, Dept. of Civil & Environmental Engineering, West Virginia Univ., Morgantown, WV 26506.