Affiliation: | 1. Grenoble Ecole de Management, , 38003 Grenoble, France;2. School of Business Economics and Informatics, Birkbeck, University of London, , London, WC1E 7HX UK;3. Department of Economics and Statistics Cognetti De Martiis, University of Torino and BRICK, Collegio Carlo Alberto, , 10153 Torino, Italy |