https://hal-paris1.archives-ouvertes.fr/hal-02404160
Contributor : Alain Duplouy <>
Submitted on : Wednesday, December 18, 2019 - 10:29:20 AM Last modification on : Sunday, January 19, 2020 - 6:38:21 PM Long-term archiving on: : Thursday, March 19, 2020 - 12:47:31 PM