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| Besma Talbi |
| Jendouba University, Faculty of economics and management of Jendouba |
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| Faculty of economics and management of Jendouba |
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| , Jendouba 8189 |
| Tunisia |
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| besmatalbi@yahoo.fr |
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JEL Areas:
Q4 : Energy: General
C0 : Mathematical and Quantitative Methods: General |
