1. 1. Prof. Binayak S. Choudhury, Department of Mathematics, Bengal Engineering and Science University, West Bengal, India. Email : binayak12@yahoo.co.in binayak@becs.ac.in
2. 2. Prof. Renu Chugh, Department of Mathematics, Maharshi Dayanand University, Rohtak, India. Email : chughrenu@yahoo.com
3. 3. Prof. Kenan Tas, Department of Mathematics and Computer Science, Cankaya University, Ankara, Turkey. Email : kenan@cankaya.edu.tr