1. Department of Computer Science and Engineering, Graphic Era Deemed to be University, Dehradun, India
2. Department of Mathematics, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
3. Department of Computer Engineering, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
4. NSN Branch Operations OY (FIKE), Nairobi, Kenya