https://hal-normandie-univ.archives-ouvertes.fr/hal-01829751 Contributor : Ginette VagenheimConnect in order to contact the contributor Submitted on : Wednesday, July 4, 2018 - 12:02:19 PM Last modification on : Wednesday, March 2, 2022 - 4:58:01 PM Long-term archiving on: : Monday, October 1, 2018 - 12:54:10 PM