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First Author:
 
Toshihiro Matsumura
Institute of Social Science, University of Tokyo
matsumur@iss.u-tokyo.ac.jp
 
Institute of Social Science, University of Tokyo, 7-3-1, Hongo
Bunkyo-ku, 113--0053, Japan
 
81-3-5841-4932(Phone)
81-3-5841-4932(Fax)

Second Author:

Daisuke Shimizu
Faculty of Economics, Gakushuin University
daisuke.shimizu@gakushuin.ac.jp
 
1-5-1, Mejiro, Toshima-ku,
Tokyo, 171-8588, Japan
 
(81)-3-5992-3633(Phone)