1. Sree Narayana Gurukulam College of Engineering, Department of Management Studies, Kolenchery, Ernakulam, Kerala, India
2. Uludag University, Faculty of Arts and Science, Department of Mathematics, Gorukle Campus, Bursa, Turkey
3. VSK University, PG Department of Mathematics, Bellary, Karnataka, India
4. Selcuk University, Faculty of Science, Department of Mathematics, Campus, Konya, Turkey