https://hal.inria.fr/inria-00076024 Contributor : Rapport De Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 7:48:58 PM Last modification on : Friday, February 4, 2022 - 3:19:40 AM Long-term archiving on: : Friday, May 13, 2011 - 5:32:23 PM