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First Author:
 
Jean-michel Sahut
Amiens School of Management and CEREGE EA 1722 University of Poitiers
jmsahut@gmail.com
 
18 place Saint Michel
Amiens, 80260, France
 
+33 6 33 42 00 99(Phone)
+33 6 33 42 00 99(Fax)

Second Author:

Medhi Mili
University of Poitiers & University of Sfax
Mehdi.Mili@isgs.rnu.tn