Dr. Hasibun Naher, Assistant Professor, Department of Mathematics and Natural Sciences, BRAC University, Bangladesh
E-mail: hasibun06tasauf@gmail.com

Dr. Vishnu Narayan Mishra, Assistant Professor of Mathematics, Applied Mathematics & Humanities Dept., Sardar Vallabhbhai National Institute of Technology, Gujarat, India
E-mail: vishnunarayanmishra@gmail.com