https://hal-amu.archives-ouvertes.fr/hal-03337311 Contributor : Jean-Michel DURAFOURConnect in order to contact the contributor Submitted on : Wednesday, September 8, 2021 - 9:05:57 AM Last modification on : Thursday, September 9, 2021 - 3:27:20 AM Long-term archiving on: : Friday, December 10, 2021 - 9:52:55 AM