https://tel.archives-ouvertes.fr/tel-02475520 Contributor : Guillaume TouyaConnect in order to contact the contributor Submitted on : Wednesday, February 12, 2020 - 10:11:29 AM Last modification on : Tuesday, May 4, 2021 - 12:46:19 PM Long-term archiving on: : Wednesday, May 13, 2020 - 1:17:53 PM