https://hal-amu.archives-ouvertes.fr/hal-03222576 Contributor : Jean-Michel DurafourConnect in order to contact the contributor Submitted on : Monday, May 10, 2021 - 12:35:03 PM Last modification on : Saturday, January 15, 2022 - 4:12:44 AM Long-term archiving on: : Wednesday, August 11, 2021 - 7:21:34 PM