https://hal-amu.archives-ouvertes.fr/hal-01429363 Contributor : Michèle BenhaimConnect in order to contact the contributor Submitted on : Saturday, January 7, 2017 - 7:47:48 PM Last modification on : Friday, October 22, 2021 - 3:35:06 AM Long-term archiving on: : Saturday, April 8, 2017 - 12:21:17 PM