Grassland Science in Europe 19. General meeting of the European Grassland Federation 19. General meeting of the European Grassland Federation, May 2002, La Rochelle, France
2. International Symposium and Workshop on Time Domain Reflectrometry for Innovate Geotechnical Applications 2. International Symposium and Workshop on Time Domain Reflectrometry for Innovate Geotechnical Applications, 2001, Evanston, United States