https://hal.inria.fr/inria-00074442 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 3:18:11 PM Last modification on : Thursday, February 3, 2022 - 11:18:03 AM Long-term archiving on: : Tuesday, April 12, 2011 - 4:58:03 PM