https://hal.archives-ouvertes.fr/hal-01788035 Contributor : Marco RacitiConnect in order to contact the contributor Submitted on : Tuesday, May 8, 2018 - 10:39:49 AM Last modification on : Friday, October 23, 2020 - 4:45:55 PM Long-term archiving on: : Tuesday, September 25, 2018 - 6:43:15 PM