Affiliation: | 1. MetroEconómica, Institute of Advanced Studies of Administration (IESA), and the Venezuelan National Academy of Economic Sciences Venezuela.;2. MetroEconómica and Andrés Bello University, Caracas, Venezuela.;1. Faculty of Economics and Management, University of Yaoundé II, Cameroon, PO.BOX. 1365, Yaoundé, Cameroon;2. Faculty of Economics and Management, University of Ngaoundéré, Cameroon |