1. Dr., Senior Researcher, IFSTTAR, GERS, Geomaterials & Modeling in Geotechnics, F-44340 Bouguenais; France
2. Dr., Prof., UENF; Brasil
3. Senior Technician, IFSTTAR, GERS, Geomaterials & Modeling in Geotechnics, F-44340 Bouguenais; France
4. Dr., Researcher, IFSTTAR, GERS, Geomaterials & Modeling in Geotechnics, F-44340 Bouguenais; France