1. Department of Mathematics, I. K. Gujral Punjab Technical University Jalandhar, Main Campus, Kapurthala 144603, Punjab, India
2. Department of Mathematics, Akal University, Raman Road, Talwandi Sabo 151302, Punjab, India
3. Scientific Computing Group, Universidad de Salamanca, Plaza de la Merced, 37008 Salamanca, Spain
4. Department of Mathematics, Escuela Politécnica Superior de Zamora, Campus Viriato, 49022 Zamora, Spain
5. University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160025, Chandigarh, India