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First Author:
 
Abdoul A. Ndiaye
LARES, Université Gaston Berger de Saint-Louis
elhadji-abdoul-aziz.ndiaye@ugb.edu.sn
 
 
 
 

Second Author:

Mamadou A. Konte
LARES, Université Gaston Berger de Saint-Louis
kontedoudou@yahoo.fr
 
 
 
 

Third Author:

Yao T. Kpegli
LARES, Université Gaston Berger de Saint-Louis
kpegliyaothibaut@yahoo.fr