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First Author:
 
Sami Saafi
EAS – Faculty of Economic Sciences and Management of Mahdia, University of Monastir
samisaafi@yahoo.fr
 
Mahdia, 5100, Tunisia
 
0021696545491(Phone)
0021696545491(Fax)

Second Author:

Meriem Haj mohamed
EAS, FSEG Mahdia, University of Monastir Tunisia
meriem.hjmed@yahoo.fr
 
 
 
 

Third Author:

Abdeljelil Farhat
EAS, FSEG Mahdia, University of Monastir Tunisia
abdeljelil.farhat@fsegma.rnu.tn