https://hal-univ-pau.archives-ouvertes.fr/hal-02466737 Contributor : Marina LloancyConnect in order to contact the contributor Submitted on : Tuesday, February 4, 2020 - 4:35:25 PM Last modification on : Friday, January 15, 2021 - 9:24:31 AM Long-term archiving on: : Tuesday, May 5, 2020 - 6:10:45 PM