https://hal-amu.archives-ouvertes.fr/hal-02120381 Contributor : Clara GallianoConnect in order to contact the contributor Submitted on : Sunday, May 5, 2019 - 9:56:37 PM Last modification on : Wednesday, November 3, 2021 - 5:49:39 AM Long-term archiving on: : Tuesday, August 6, 2019 - 12:33:21 PM