1. Senior Research Scholar, Dept. of Mathematics, Indian Institute of Technology (IIT) Kharagpur, Kharagpur, West Bengal 721302, India.
2. Assistant Professor, Dept. of Mathematics, National Institute of Technology (NIT) Jamshedpur, Jamshedpur, Jharkand 831014, India.
3. Professor, LR2E Laboratory Quartz EA 7393, Ecole Supérieure d’Ingénieurs en Génie Electrique, Productique et Management (ECAM-EPMI), 13 Blvd. de l’Hautil, Cergy 95092, France.
4. Associate Professor, Dept. of Mathematics, Indian Institute of Technology (IIT) Kharagpur, Kharagpur, West Bengal 721302, India (corresponding author).