1. Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, 00-927 Warsaw, Poland
2. Department of Computer Science and Information Technology, Institute of Technical Education and Research, Siksha ‘O’ Anusandhan, Bhubaneswar, 751030 Odisha, India
3. Department of Computer Science and Engineering, National Institute of Technical Teachers’ Training and Research, Kolkata, 700106 West Bengal, India