sarbast.mikael@soran.edu.iq
t.salhi@univ-bba.dz
bohuang0407@buaa.edu.cn
© 2022 Sarbast Hussein, Tayeb Salhi, Bo Huang, published by Slovak Academy of Sciences, Mathematical InstituteThis work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.