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Masashi Umezawa
School of Management, Tokyo University of Science
 
1-11-2 Fujimi
Chiyoda-ku, Tokyo 102-0071
JAPAN
 
m.umezawa@gmail.com
 
 
 
 
 
 
JEL Areas:
D4 : Market Structure and Pricing: General
L1 : Market Structure, Firm Strategy, and Market Performance: General