1. Postdoctoral Fellow, Dept. of Civil Engineering, École Polytechnique de Montréal, Univ. of Montréal Campus, P.O. Box 6079, Station CV, Montréal PQ, Canada H3C 3A7.
2. Professor, Dept. of Civil Engineering, École Polytechnique de Montréal, Univ. of Montréal Campus, P.O. Box 6079, Station CV, Montréal PQ, Canada H3C 3A7.
3. Emeritus Professor, Dept. of Civil Engineering, École Polytechnique de Montréal, Univ. of Montréal Campus, P.O. Box 6079, Station CV, Montréal PQ, Canada H3C 3A7; formerly, Director of Research Office, Univ. du Québec à Montréal, P.O. Box 8888, Station CV, Montréal PQ, Canada, H3C 3P8.