About the Authors

Pankaj Kumar Mishra

Department of Mathematics, University of Petroleum & Energy Studies, P.O. Bidholi, Via Prem Nagar, Dehradun (Uttarakhand), India

Shweta Sachdeva

Department of Mathematics, University of Petroleum & Energy Studies, P.O. Bidholi, Via Prem Nagar, Dehradun (Uttarakhand), India

S. K. Banerjee

Department of Mathematics, University of Petroleum & Energy Studies, P.O. Bidholi, Via Prem Nagar, Dehradun (Uttarakhand), India

Corresponding Author

Email: pk_mishra009@yahoo.co.in