- Belgium
- General staff in the international relations of the European community .
- State university of Liege
- Canada
- University of Sherbrooke
- Grande Ecole for engineers of Montreal
- France
- Labo of Mecasurf of CER of the ENSAM –Aisx in Provence.
- University of “Rennes”(institute of geology).
- Central school of Lyon
- University of Pierre and Marie Curie-Paris
- University of “Bordeaux”
- National polytechnic institute of ”Toulouse”
- University of sc.Tech of “Rouen”
- Academic institute of technology of “Saint-etienne”.
- Marroco
- Ministry of the energy and the mines.
- Mauritania
- National centre of graphic research and of peaches of Nouadhibou.
- United Kingdom
- University of Bristol.
- Russia
- University of chemical technology of “Mendeliev”.
- State University of ecological engineering of Moscow.