Notes, Comments and Preliminary results May 03 2010 Xavier Y Wauthy   Market coverage and the nature of product differentiation: a note   Abstract  Contact Information  Citation  Full Text  -  Note   Jun 27 2005 Xavier Wauthy and Nicolas Boccard   Equilibrium payoffs in a Bertrand-Edgeworth model with product differentiation   Abstract  Contact Information  Citation  Full Text  -  Note   Feb 05 2002 Xavier Wauthy   A note on Research and Development and Voluntary Export Restrictions".   Abstract  Contact Information  Citation  Full Text  -  Comment