1. Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, Karnataka, India
2. School of Engineering, CHRIST (Deemed to be University), Bengaluru, Karnataka, India
3. Department of Studies and Research in Mathematics, Kuvempu University, Shimogga, Karnataka, India
4. Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH, USA