Jean Laine Département Économie, Finance, Assurance, Banque (EFAB) Conservatoire National des Arts et Métiers (CNAM)   Istanbul, 34060 Turkey   jean.laine@lecnam.net   http://mscenter.bilgi.edu.tr           JEL Areas: D7 : Analysis of Collective Decision-Making: General C7 : Game Theory and Bargaining Theory:General