1. Erasmus School of Economics, Erasmus University Rotterdam, PO Box 1738, 3000 DR Rotterdam, The Netherlands.
2. Greg-HEC and IUFM-University Paris Sorbonne, 10 rue Molitor, 75016 Paris, France.
3. Greg-HEC and CNRS, HEC Paris School of Management, 1 rue de la Liberation, 78501 Jouy-en-Josas, France.