https://hal-amu.archives-ouvertes.fr/hal-03203951 Contributor : Françoise DianaConnect in order to contact the contributor Submitted on : Monday, May 17, 2021 - 2:48:33 PM Last modification on : Wednesday, November 3, 2021 - 4:08:32 AM Long-term archiving on: : Wednesday, August 18, 2021 - 6:41:45 PM