Notes, Comments and Preliminary results Jan 26 2017 Kosuke Hirose , Sang-ho Lee and Toshihiro Matsumura   Environmental corporate social responsibility : A note on the first-mover advantage under price competition   Abstract  Contact Information  Citation  Full Text  -  Note   Nov 09 2016 Toshihiro Matsumura and Akira Ogawa   Corporate social responsibility and endogenous competition structure   Abstract  Contact Information  Citation  Full Text  -  Note   Oct 28 2009 Takeshi Ebina , Toshihiro Matsumura and Daisuke Shimizu   Mixed oligopoly and spatial agglomeration in quasi-linear city   Abstract  Contact Information  Citation  Full Text  -  Note   May 01 2009 Toshihiro Matsumura and Daisuke Shimizu   Equilibrium Location and Economic Welfare in Delivered Pricing Oligopoly   Abstract  Contact Information  Citation  Full Text  -  Note   Aug 07 2003 Daisuke Shimizu and Toshihiro Matsumura   Equilibria for circular spatial Cournot markets   Abstract  Contact Information  Citation  Full Text  -  Note   Jun 13 2003 Toshihiro Matsumura   Strategic R and D investments with uncertainty   Abstract  Contact Information  Citation  Full Text  -  Note