https://hal-amu.archives-ouvertes.fr/hal-01774526 Contributor : Chantal ZhengConnect in order to contact the contributor Submitted on : Monday, April 23, 2018 - 4:30:09 PM Last modification on : Wednesday, November 3, 2021 - 9:54:39 AM Long-term archiving on: : Wednesday, September 19, 2018 - 12:20:22 AM