1. Department of Mathematics, Golestan University, Gorgan, Iran
2. Department of Mechanical Engineering, Australian College of Kuwait, Mishref, Safat 13015, Kuwait and Centre for Infrastructure Engineering, Western Sydney University, Penrith 2751, NSW, Australia
3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, People’s Republic of China
4. Department of Statistics, The University of Auckland, Auckland, New Zealand
5. Department of Mathematics, Yazd University, Yazd, Iran