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ralph lauren polo


First Author:
 
Shigeyuki Hamori
Kobe University
hamori@econ.kobe-u.ac.jp
 
 
 
 

Second Author:

Kunlin Hsieh
Kobe University
kunlinxie@yahoo.co.jp
 
 
 
 

Third Author:

Yuching Hsieh
Soochow University
yqxie1996@yahoo.co.jp