Kosgoda, T.M.; Jayasundara, A.K.C.H.(International Conference on Applied Social Statistics (ICASS) - 2019, Department of Social Statistics, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2019)
Kosgoda, T. M.; Jayasundara, A.K.C.H.(International Conference on Applied Social Statistics (ICASS) - 2019, Department of Social Statistics, Faculty of Social Sciences, University of Kelaniya, Sri Lanka., 2019)
Sakalasooriya, S.M.E.U.P.; Gunasekara, H.D.E.(4th International Conference on Social Sciences 2018, Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2018)