1. Department of Mathematics University of Azad Jammu and Kashmir Muzaffarabad Kotli Pakistan
2. Department of Mathematics and Statistics Jordan University of Science and Technology Irbid Jordan
3. Department of Industrial Engineering and Systems, College of Engineering Princess Nourah bint Abdulrahman University Riyadh Saudi Arabia
4. Department of Mathematics COMSATS University Islamabad Sahiwal Pakistan
5. Department of Mathematics Mirpur University of Science and Technology (MUST) Mirpur Pakistan
6. Department of Mechanical Engineering, College of Engineering University of Ha'il Ha'il City Saudi Arabia
7. Laboratory of Metrology and Energy systems Department of Energy Engineering University of Monastir Monastir Tunisia