https://hal.inria.fr/inria-00071338 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Tuesday, May 23, 2006 - 4:32:10 PM Last modification on : Friday, February 4, 2022 - 3:22:30 AM Long-term archiving on: : Tuesday, February 22, 2011 - 11:53:39 AM