1. School of Mathematical Sciences, College of Computing, Informatics & Mathematics, Universiti Teknologi MARA,Shah Alam,Malaysia
2. Universiti Tunku Abdul Rahman,Lee Kong Chian Faculty of Eng. & Science,Dept. of Mathematical & Acturial Sciences,Malaysia
3. Universiti Kebangsaan Malaysia,Faculty of Science & Technology,Department of Mathematical Sciences,Bangi,Malaysia
4. School of Computer Science, Taylor's University,Faculty of Innovation & Technology,Subang Jaya,Malaysia