11th International Congress for Mathematical Geology: Quantitative Geology from Multiple Sources, IAMG 2006. International Association for Mathematical Geology, IAMG 2006.

World Scientific Publishing Co..

48th Colloquium on the Law of Outer Space.

13th International Conference on Analytical and Stochastic Modelling Techniques and Applications, ASMTA 2006.

5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress.