1. Faculté des Sciences Economiques et de Gestion de Sfax, Laboratoire de recherche en Économie et Gestion (LR18ES27), Sfax, Tunisia
2. Rajagiri Business School, Rajagiri Valley Campus, Kochi, India
3. Department of Innovation in Government and Society, College of Business and Economics, United Arab Emirates University
4. Centre for Energy and Environmental Policy Research, Beijing Institute of Technology, Beijing, P.R. China