https://hal.inria.fr/inria-00074386 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 3:12:00 PM Last modification on : Friday, February 4, 2022 - 3:16:09 AM Long-term archiving on: : Monday, April 5, 2010 - 12:08:53 AM