https://hal.inria.fr/inria-00075241 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 5:48:05 PM Last modification on : Wednesday, April 6, 2022 - 3:48:04 PM Long-term archiving on: : Tuesday, April 12, 2011 - 10:01:58 PM