https://halshs.archives-ouvertes.fr/halshs-02392143 Contributor : Ilaria MorettiConnect in order to contact the contributor Submitted on : Tuesday, December 3, 2019 - 7:23:33 PM Last modification on : Friday, March 19, 2021 - 9:52:02 PM Long-term archiving on: : Wednesday, March 4, 2020 - 9:30:21 PM