https://hal-upec-upem.archives-ouvertes.fr/hal-00796552 Contributor : Venceslas BiriConnect in order to contact the contributor Submitted on : Monday, March 4, 2013 - 2:44:21 PM Last modification on : Saturday, January 15, 2022 - 3:56:03 AM Long-term archiving on: : Wednesday, June 5, 2013 - 3:57:07 AM