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First Author:
 
Akiko Sato Oishi
Faculty of Law and Economics, Chiba University
oishi@le.chiba-u.ac.jp
 
Chiba, 263-8522, Japan
 
+81-43-290-3579(Phone)
+81-43-290-3579(Fax)

Second Author:

Yukiko Abe
Graduate School of Economics and Business Administration, Hokkaido University
abey@econ.hokudai.ac.jp
 
Kita 9, Nishi 7, Kita-ku
Sapporo, 060-0809, Japan
 
+81-11-706-3860(Phone)
+81-11-706-4947(Fax)