Elimbi, A.
Njouonkou, S.
Ndi Nsami, J.
Belibi Belibi, P. D.
Ketcha Mbadkam, J.
Funding for this research was provided by:
Bureau Afrique Centrale et des Grands Lacs - Agence Universitaire de la Francophonie (NS0020///10406)
The World Academy of Sciences (N 13 - 018 RG / CHE / AF / AC G - UNESCO FR: 3240277723)
Article History
Received: 26 April 2017
Revised: 29 March 2018
Accepted: 11 May 2018
First Online: 22 May 2018