1. Department of Mathematics, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
2. Department of Mathematics and Natural Sciences, Prince Mohammad Bin Fahd University, P.O. Box 1664, Al Khobar 31952, Saudi Arabia
3. Department of Mathematics, Zonguldak Bülent Ecevit University, Zonguldak 67100, Turkey
4. Department of Mathematics, Hannam University, Daejeon 34430, Republic of Korea