https://hal-amu.archives-ouvertes.fr/hal-01367789 Contributor : Boris BarraudConnect in order to contact the contributor Submitted on : Friday, September 16, 2016 - 4:30:10 PM Last modification on : Wednesday, November 3, 2021 - 9:51:25 AM Long-term archiving on: : Saturday, December 17, 2016 - 2:51:29 PM