International Journal of Economic Theory
Room 518, New Research Tower
Keio University
2-15-45 Mita
Minato-ku
Tokyo 108-8345, Japan

email:myano[at]ijet.jp

International Journal of Economic Theory
Institute of Economic Research
Kyoto University
Yoshida Honmachi
Sakyo-ku
Kyoto 606-8501, Japan

email:nishimura[at]ijet.jp