1. College of Business and Economics, Umm Al Qura University, Makkah, Saudi Arabia
2. Higher School of Economic and Commercial Sciences (ESSEC), University of Tunis, Montfleury-Tunis, Tunisa
3. Rabat Business School, International University of Rabat, Rabat, Morocco
4. Department of Statistics, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
5. Research Lab in Algebra, Number Theory and Intelligent, Systems, Faculté des Sciences de Monastir, Monastir, Tunisia