https://hal-amu.archives-ouvertes.fr/hal-03138997 Contributor : Dominique DebanneConnect in order to contact the contributor Submitted on : Thursday, February 11, 2021 - 3:55:08 PM Last modification on : Wednesday, November 3, 2021 - 9:54:17 AM Long-term archiving on: : Wednesday, May 12, 2021 - 7:03:36 PM