Omeega Hansini, S.G.L.(4th National Research Conference on Applied Social Statistics, Social Statistics Students’ Association, Department of Social Statistics, Faculty of Social Science, University of Kelaniya, Sri Lanka, 2018)
Anuththara, K.K.G.(4th National Research Conference on Applied Social Statistics, Social Statistics Students’ Association, Department of Social Statistics, Faculty of Social Science, University of Kelaniya, Sri Lanka, 2018)
Bopitiya, D.H.(4th National Research Conference on Applied Social Statistics, Social Statistics Students’ Association, Department of Social Statistics, Faculty of Social Science, University of Kelaniya, Sri Lanka, 2018)
Gunarathna, D.D.W.N.(4th National Research Conference on Applied Social Statistics, Social Statistics Students’ Association, Department of Social Statistics, Faculty of Social Science, University of Kelaniya, Sri Lanka, 2018)
Delina, P. J. E.; Dayawansa, N. D. K.; De Silva, R. P.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)