https://hal-normandie-univ.archives-ouvertes.fr/hal-02509580 Contributor : Riccardo BerardiConnect in order to contact the contributor Submitted on : Thursday, March 19, 2020 - 4:30:48 PM Last modification on : Friday, November 19, 2021 - 4:32:04 PM Long-term archiving on: : Saturday, June 20, 2020 - 1:00:50 PM