Kodituwakku, K.A.R.K.; Yatawara, M.D.M.D.W.M.M.K.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)
Fernando, T.D.; Arachchige, Y.L.N.M.; Jayawardena, B.M.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)
Handagiripathira, H.M.N.L.; Deeyamulla, M.P.; Koichiro, S.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)