1. Institute of Mathematics and Mechanics, ANAS, Baku, Azerbaijan, Azerbaijan University, Baku, Azerbaijan, and Institute for Physical Problems, Baku State University, Baku, Azerbaijan.
2. Department of Applied Mathematics, University of Mazandaran, Babolsar, Iran, Department of Mathematical Sciences, University of South Africa, UNISA 0003, South Africa, and Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 110122, Taiwan.
3. Institute of Mathematics and Mechanics, ANAS, Baku, Azerbaijan, Baku State University, Baku, Azerbaijan.
4. Azerbaijan State University of Economics (UNEC), Baku, Azerbaijan.
5. Baku State University, Institute of Mathematics and Mechanics, ANAS, Baku, Azerbaijan, Institute of Mathematics and Mechanics, ANAS, Baku, Azerbaijan.