1. Department of Mathematics, COMSATS University Islamabad, Islamabad 44000, Pakistan
2. Departamento de Matemáticas y Física, Universidad Autónoma de Aguascalientes, Ciudad Universitaria, Avenida Universidad 940, Aguascalientes 20131, Mexico
3. Department of Mathematics, School of Digital Technologies, Tallinn University, Narva Rd. 25, 10120 Tallinn, Estonia
4. College of Vestsjaelland South & Mathematical and Physical Science Foundation, 4200 Slagelse, Denmark
5. Department of Electrical Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia