https://hal.inria.fr/inria-00339184 Contributor : Pierre GenevèsConnect in order to contact the contributor Submitted on : Monday, August 22, 2011 - 9:26:42 AM Last modification on : Wednesday, April 6, 2022 - 3:48:38 PM Long-term archiving on: : Sunday, December 4, 2016 - 8:44:57 AM