1. UFR AES ‐ Economics and Management, Dionysian Economics Laboratory (L.E.D.) Université Paris 8 Saint‐Denis France
2. Department of Economics University of Ottawa Ottawa Ontario Canada
3. Harvard Center for African Studies Harvard University Cambridge Massachusetts United States
4. Department of Mathematics Advanced Teachers' Training College, University of Yaounde I Yaounde Cameroon
5. Department of Economics The University of Texas Rio Grande Valley, Robert C. Vackar College of Business and Entrepreneurship Edinburg Texas USA