1. BGE TECHNOLOGY GmbH, Eschenstrasse 55, D-31224 Peine, Germany
2. Geotechnical Institute, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 1, 09599 Freiberg, Germany
3. CEA, DES, IRESNE, DEC, Cadarache F-13108 Saint-Paul-Lez-Durance, France
4. Faculty of Science, Charles University Prague, Albertov 6, 128 43 Prague 2, Czech Republic
5. Institute Of Engineering, National Autonomous University of Mexico, Coyoacán, 04510 Mexico City, Mexico