https://hal.archives-ouvertes.fr/hal-02115292 Contributor : Elisabeth GoetschyConnect in order to contact the contributor Submitted on : Tuesday, May 25, 2021 - 11:41:44 AM Last modification on : Friday, August 5, 2022 - 10:43:10 AM Long-term archiving on: : Thursday, August 26, 2021 - 7:02:21 PM