https://hal.inria.fr/inria-00559090 Contributor : Lisandro FerminConnect in order to contact the contributor Submitted on : Friday, March 18, 2011 - 6:41:13 PM Last modification on : Friday, February 4, 2022 - 3:07:50 AM Long-term archiving on: : Friday, December 2, 2016 - 2:16:48 PM