https://hal-amu.archives-ouvertes.fr/hal-02515507 Contributor : Nathalie ChaponConnect in order to contact the contributor Submitted on : Monday, March 23, 2020 - 3:16:44 PM Last modification on : Tuesday, January 4, 2022 - 4:36:28 AM Long-term archiving on: : Wednesday, June 24, 2020 - 2:46:34 PM