https://hal.archives-ouvertes.fr/hal-01017462 Contributor : Pierre RabardelConnect in order to contact the contributor Submitted on : Wednesday, July 2, 2014 - 3:32:41 PM Last modification on : Wednesday, April 28, 2021 - 6:39:35 PM Long-term archiving on: : Tuesday, October 13, 2015 - 3:06:01 PM