1. Department of Mathematics, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
2. Department of Mathematics, Faculty of Science, University of Tabuk, P.O. Box 741, Tabuk 71491, Saudi Arabia
3. Department of Mathematical Sciences, Adekunle Ajasin University, Akungba Akoko PMB 001, Nigeria
4. Department of Mechanical Engineering, Sejong University, Seoul 05006, Republic of Korea