1. Department of Mathematics, University of Gujrat, Gujrat, Pakistan
2. Dipartimento di Matematica e Informatica, Università degli Studi di Palermo, Via Archirafi 34, Palermo 90123, Italy
3. Department of SEG, University of Badji Mokhtar, Annaba, Algeria
4. Future Technology Research Center, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan