Christian Hubert Ebeke CERDI-Université d'Auvergne Clermont 1 (FRANCE)   CERDI 65 Boulevard François Mitterand Clermont Ferrand, 63009 FRANCE   Christian_Hubert.Ebeke@u-clermont1.fr   http://cerdi.org/Info_p/default.asp           JEL Areas: O1 : Economic Development: General C5 : Econometric Modeling: General