1. Department of Mathematics, Veltech High-Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600065, India
2. Department of Mathematics, Open Educational College, Ministry of Education, Al-Qadisiya Centre, Iraq
3. Faculty of Education, Van Yuzuncu Yıl University, Zeve Campus, Tuşba 5080 Van, Turkey
4. Department of Mathematics, Bingöl University, Turkey