https://hal-sciencespo.archives-ouvertes.fr/hal-01063456 Contributor : Spire Sciences Po Institutional RepositoryConnect in order to contact the contributor Submitted on : Friday, September 12, 2014 - 10:58:52 AM Last modification on : Tuesday, March 22, 2022 - 3:34:49 AM Long-term archiving on: : Saturday, December 13, 2014 - 10:37:16 AM