1. Associate Professor, Université Laval, Département de génie civil, PavillonAdrien-Pouliot, Sainte-Foy (Québec), Canada G1K 7P4.
2. Research Assistant, Université Laval, Département de génie civil, PavillonAdrien-Pouliot, Sainte-Foy (Québec), Canada G1K 7P4.
3. Professor, École Polytechnique, Dept. of Civil, Geological and Mining Engineering, P.O. Box 6079, Station A, Montreal (Québec), Canada H3C 3A7.