1. Department of Mathematics, University of Azad Jammu and Kashmir Muzaffarabad, Azad Kashmir 13100, Pakistan
2. Theoretical Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000, Pakistan
3. Department of Physics, University of Azad Jammu and Kashmir Muzaffarabad, Azad Kashmir 13100, Pakistan
4. Department of Computer Sciences and Information Technology, University of Azad Kashmir, Azad Kashmir 13100, Pakistan