https://hal.inria.fr/hal-03189957 Contributor : Jean-Claude BermondConnect in order to contact the contributor Submitted on : Monday, April 5, 2021 - 4:23:21 PM Last modification on : Thursday, July 8, 2021 - 3:50:25 AM Long-term archiving on: : Tuesday, July 6, 2021 - 6:07:03 PM