1. Department of Mathematics, Sri Vasavi College of Arts and Science College, Erode, Tamilnadu, India
2. Department of Statistics, Periyar University, Salem, Tamil Nadu, India
3. Department of Mechanical Engineering, Lakireddy Bali Reddy College of Engineering, NTR District, Mylavaram, Krishna, Andhra Pradesh, India
4. Faculty of Mechanical Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia