Notes, Comments and Preliminary results Mar 11 2015 Michèle Breton and Mohammed Kharbach   Collusion and demand volatility   Abstract  Contact Information  Citation  Full Text  -  Note   Oct 29 2009 Michèle Breton and Mohammed Kharbach   Who benefits from price indexation?   Abstract  Contact Information  Citation  Full Text  -  Note   Jul 28 2009 Mohammed Kharbach   A Unidirectional Hotelling Model   Abstract  Contact Information  Citation  Full Text  -  Note