https://hal.inria.fr/inria-00075907 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 7:34:43 PM Last modification on : Friday, February 4, 2022 - 3:16:27 AM Long-term archiving on: : Friday, May 13, 2011 - 4:23:09 PM