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First Author:
 
Akihiko Yanase
Takasaki City University of Economics
yanase@tcue.ac.jp
 
1300 Kaminamie
Takasaki, 370-0801, Japan
 
 
 
http://www1.tcue.ac.jp/home1/yanase/

Second Author:

Yasushi Kawabata
Mie University
kawabata@edu.mie-u.ac.jp