Authors
Amar Bougoutaia
Laboratory of Pure and Applied Mathematics (LPAM), University of Laghouat, Laghouat, Algeria
Amar Belacel
Laboratory of Pure and Applied Mathematics (LPAM), University of Laghouat, Laghouat, Algeria
© 2022 Amar Bougoutaia, Amar Belacel, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.