1. Department of Mathematics, Institute of Engineering & Management Salt Lake, Kolkata, India
2. Department of Materials and Production, Aalborg University, Aalborg East, Denmark
3. Department of Mathematics, University of Kalyani, Kalyani, India
4. Palpara Vidyamandir, Chakdaha, West Bengal, India
5. Department of Mathematics, Bengal Institute of Technology, Kolkata, India
6. Kishore Bharati Bhagini Nivedita College, Kolkata, India