1. Art and Science Faculty, Department of Mathematics, Siirt University, Siirt, Turkey
2. Department of Basic Sciences, University of Engineering and Technology, Peshawar, Pakistan
3. Section of Mathematics, International Telematic University Uninettuno, Roma, Italy
4. Department of Mathematics, Huzhou University, Huzhou, China
5. Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering, Changasha, University of Science & Technology, Changsha, China
6. Renewable Energy Research Centre, Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand