https://hal-normandie-univ.archives-ouvertes.fr/hal-02006383 Contributor : Isabelle NAMECHEConnect in order to contact the contributor Submitted on : Monday, February 4, 2019 - 3:42:56 PM Last modification on : Thursday, February 24, 2022 - 4:20:05 PM Long-term archiving on: : Sunday, May 5, 2019 - 4:13:07 PM