1. Abdur Razzaque Mughal:
Department of Statistics, Government College University,Lahore,Pakistan
2. Zakiyah Zain:
Department of Mathematics and Statistics, School of Quantitative Sciences, UUM College of Arts and Sciences,Universiti Utara Malaysia, UUM Sintok 06010, Kedah,Malaysia
3. Nazrina Aziz:
Department of Mathematics and Statistics, School of Quantitative Sciences, UUM College of Arts and Sciences,Universiti Utara Malaysia, UUM Sintok 06010, Kedah,Malaysia