LMD/Ecole Polytechnique 91128, Palaiseau Cedex, France
phone: +33-1-69-33-4802, fax: +33-1-69-33-3005
email: Nicole.Jacquinet@lmd.polytechnique.fr
phone: +33-1-69333604, fax: +33-1-69333005
email: Katia.Garceran@lmd.polytechnique.fr