https://halshs.archives-ouvertes.fr/tel-02267356 Contributor : Éric VerdeilConnect in order to contact the contributor Submitted on : Monday, August 19, 2019 - 11:12:41 AM Last modification on : Thursday, April 28, 2022 - 10:50:02 AM Long-term archiving on: : Thursday, January 9, 2020 - 3:08:45 PM