About the Authors

Alhassane Touré

School of Mathematics and Statistics, Central China Normal University, 152 Luoyu Avenue, Wuhan, Hubei, 430079, P.R. China

Zuo Guoxin

School of Mathematics and Statistics, Central China Normal University, 152 Luoyu Avenue, Wuhan, Hubei, 430079, P.R. China

Tchondo Anakpa Manawessoue

School of Economics, Central China Normal University

Sory Kaba

School of Economics, Central China Normal University

Corresponding Author

Email: toureal90@gmail.com