1. Faculty of Economics and Management, University of Yaoundé II, Soa, Yaoundé P.O. Box 1365, Cameroon
2. Cedimes Institute USA, Plattsburgh, NY 12901, USA
3. Ivey Business School, University of Western Ontario, London, ON N6G 0N1, Canada
4. Department of Finance, School of Management, University of Quebec in Montreal, Montreal, QC H3C 3P8, Canada
5. Department of Finance and Accounting, University of Dschang, Dschang P.O. Box 96, Cameroon