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First Author:
 
Nuno Carlos Leitão
ESGTS, Polytechnic Institute of Santarém
nunocarlosleitao@gmail.com
 
 
 
 

Second Author:

Horácio C. Faustino
ISEG, Technical University of Lisbon
faustino@iseg.ult.pt
 
 
 
 

Third Author:

Yushi Yoshida
Faculty of Economics, Kyushu Sangyo University
yushi@ip.kyusan-u.ac.jp