1. Department of Mathematics, Riphah Institute of Computing and Applied Sciences, Riphah International University, Lahore, Pakistan
2. Faculty of Education, Van Yuzuncu Yil University, Zeve Campus, Tusba, 65080 Van, Turkey
3. Department of Mathematics, Bingöl University, Bingöl, Turkey
4. Department of Mathematics, Iran University of Science and Technology (IUST), Narmak, Tehran 16844, Iran