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First Author:
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| Helmi Hamdi |
| Aix-Marseille University CERGAM (EA 4225) |
| helmi_aix@yahoo.fr |
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Second Author:
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| Rashid Sbia |
| DULBEA, Solvay Business and Economics School |
| r_sbia@hotmail.com |
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Third Author:
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| Hakimi Abdelaziz |
| FSEJG University of Jendouba |
| abdelazizhakimi@yahoo.fr |
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Fourth Author:
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| Wafa Khlaifia hakimi |
| FSEGJ University of Jendouba |
| wafakhlaifia@yahoo.fr |
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