Affiliation: | aInstitut of Political Economics, DEFI, Faculty of Economics and Management, University of the Mediterranean, Chateau Lafarges, route des Milles, 13290 Aix-en-Provence, France;bGroup for Economic Analysis and Theory (GATE), University of Lyon 2, CNRS UMR 5824, ENS Lettres et Sciences Humaines - GATE, Bureau R132, 15 Parvis René Descartes BP 7000, 69342 Lyon cedex 07, France |