First Author:   Houssem Rachdi IHEC Carthage Business School, Tunisia & IPAG Business School, Paris, France rachdih@uvic.ca         Second Author: Karim Bouchrara IHEC Carthage Business School, Tunisia kboucherara@yahoo.fr         Third Author: Khaled Guesmi Center of Research for Energy and Climate Change, Paris School of Business, France kalloda_fr@yahoo.fr