https://hal-iogs.archives-ouvertes.fr/tel-02019810 Contributor : Vincent JosseConnect in order to contact the contributor Submitted on : Thursday, February 14, 2019 - 5:42:56 PM Last modification on : Friday, July 2, 2021 - 3:45:31 AM Long-term archiving on: : Wednesday, May 15, 2019 - 7:52:22 PM