1. School of Management and Economics, University of Electronic Science and Technology of China, Chengdu 611731, China
2. Center for West Africa Studies, University of Electronic Science and Technology of China, Chengdu 611731, China
3. School of Public Affairs and Administration, University of Electronic Science and Technology of China, Chengdu 611731, China
4. Department of Business Administration, Faculty of Management and Economics, Tomas Bata University in Zlin, Mostni 5139, 76001 Zlin, Czech Republic