About the Authors

Mohamed Hadji BELGAROUI

Faculty of Economics and Management of Sfax, Aerodrome Road, km. 4-3018-BP.1088 Tunisia

Imen ELLILI BELGAROUI

Faculty of Economics and Management of Sfax, Aerodrome Road, km. 4-3018-BP.1088 Tunisia

Corresponding Author

Email: belgarouihadji@yahoo.fr