https://hal-lirmm.ccsd.cnrs.fr/lirmm-00109207 Contributor : Christine Carvalho De MatosConnect in order to contact the contributor Submitted on : Tuesday, October 24, 2006 - 7:41:54 AM Last modification on : Friday, August 5, 2022 - 3:03:19 PM Long-term archiving on: : Tuesday, April 6, 2010 - 6:06:28 PM