1. Professor, Dept. of Civil Engineering, McMaster Univ., 1280 Main St. West, Hamilton ON, Canada L8S 4L7.
2. Dr. hab., Wroclaw Univ. of Technology, Inst. of Geotechnics and Hydrotecnics, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
3. Professor, Univ. of Science and Technology of Lille, LML, Cite Scientifique, 59655 Villeneuve d’Ascq, France.