1. Department of Computer Sciences, Federal University Wukari, Wukari , Taraba State , Nigeria
2. School of Quantitative Sciences, College of Arts and Sciences, Universiti Utara Malaysia, Sintok , Kedah , Malaysia
3. Department of Computer Science, University of Ilorin , Ilorin , Nigeria
4. Department of Mathematics and Statistics, Federal University Wukari, Wukari , Taraba State , Nigeria