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First Author:
 
Chen Xiang LIU
EconomiX, Université de Paris X—Nanterre
liu_chenxiang@yahoo.fr
 
 
 
 

Second Author:

Mohamed El Hedi AROURI
LEO (Laboratoire d'Economie d''Orléans) and EDHEC (Ecole des Hautes Etudes Commerciales)
mohamed.arouri@univ-orleans.fr