Affiliation: | (1) Centre de Géostatistique, Ecole Supérieure des Mines de Paris 35, rue Saint-Honoré, 77305 Fontainebleau, France;(2) Present address: Department of Applied Physics, Beijing Institute of Technology, P.O. Box 327, 100081 Beijing, Peoplel's Republic of China;(3) Centre des Matériaux, Ecole Nationale Supérieure des Mines de Paris, B.P. 87, 91003 Evry, France |