1. Department of Mathematics, Computer Science and Engineering, Graphic Era Deemed to be University, Dehradun, Uttarakhad, 248002, India
2. Institute of Advanced Manufacturing Technologies, Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russia
3. Department of Mathematics, Graphic Era Deemed to be University, Dehradun, Uttarakhand, India
4. Department of Mathematics, Graphic Era Hill University, Dehradun, Uttarakhand, India