https://hal.inria.fr/hal-01024118 Contributor : Estelle BouzatConnect in order to contact the contributor Submitted on : Tuesday, July 15, 2014 - 4:19:00 PM Last modification on : Saturday, June 8, 2019 - 2:14:02 PM Long-term archiving on: : Monday, November 24, 2014 - 12:05:47 PM