First Author:   Didier Laussel Aix-Marseille Univ., CNRS, EHESS, Centrale Marseille, AMSE didier.laussel@outlook.fr   760 Route de Saint Estève Janson ROGNES, 13840, France   0609075055(Phone) 0609075055(Fax) Second Author: Ngo Van Long Department of Economics, McGill University ngo.long@mcgill.ca