https://hal-normandie-univ.archives-ouvertes.fr/hal-01951905 Contributor : Francine LuppéConnect in order to contact the contributor Submitted on : Tuesday, December 11, 2018 - 5:09:50 PM Last modification on : Wednesday, November 3, 2021 - 7:50:02 AM Long-term archiving on: : Tuesday, March 12, 2019 - 4:02:05 PM