Department of Mathematics and Information Technology Govt. Nagarjuna P.G. College of Science, Raipur (C.G.), India.
Hemant Kumar Nashine
Department of Mathematics, Disha Institute of Management and Technology Satya Vihar, Vidhansabha - Chandrakhuri Marg (Baloda Bazar Road), Mandir, Hasaud, Raipur - 492101(Chhattisgarh), India