https://hal.inria.fr/inria-00073407 Contributor : Rapport de Recherche InriaConnect in order to contact the contributor Submitted on : Wednesday, May 24, 2006 - 12:43:30 PM Last modification on : Wednesday, May 11, 2022 - 12:06:04 PM Long-term archiving on: : Sunday, April 4, 2010 - 11:45:33 PM