https://hal.archives-ouvertes.fr/hal-02447053 Contributor : Laure BrayerConnect in order to contact the contributor Submitted on : Monday, February 3, 2020 - 3:03:54 PM Last modification on : Wednesday, April 27, 2022 - 3:41:07 AM Long-term archiving on: : Monday, May 4, 2020 - 12:10:51 PM