First Author:   Ange Nsouadi LARES, University Marien Ngouabi Of Congo ange_nsouadi@hotmail.com   Brazzaville, +242, Republic of Congo   +242056664278(Phone) +242056664278(Fax) Second Author: Virginie Terraza DEM, University of Luxembourg, Faculty of Law, Economics and Finance virginie.terraza@uni.lu