Weerakkody, H. D. W.; Niwunhella, D. H. H.; Wijayanayake, A. N.(Department of Industrial Management, Faculty of Science, University of Kelaniya Sri Lanka, 2021)
Prabodhika, A. P. K. J.; Niwunhella, D. H. H.; Wijayanayake, A. N.(Department of Industrial Management, Faculty of Science, University of Kelaniya Sri Lanka, 2021)
Thalagahage, N. T. H.; Wijayanayake, A. N.; Niwunhella, D. H. H.(Department of Industrial Management, Faculty of Science, University of Kelaniya Sri Lanka, 2021)
Rajapaksha, R. R. A. K. N.; Thilakarathne, B. L. S.; Kondarage, Yashodha G.; De Silva, Rajitha(Department of Industrial Management, Faculty of Science, University of Kelaniya Sri Lanka, 2021)