Dr. Lakshmi Narayan Guin, Associate Professor of Mathematics, Department of Mathematics, Siksha Bhavana (Institute of Science), VISVA-BHARATI (A Central University & Institution of National Importance), Santiniketan-731 235, West Bengal, India.
Dr. Lakshmi Narayan Guin, Associate Professor of Mathematics, Department of Mathematics, Siksha Bhavana (Institute of Science), VISVA-BHARATI (A Central University & Institution of National Importance), Santiniketan-731 235, West Bengal, India.