Wijesooriya, L.I.; Namalie, K.D.; Sunil-Chandra, N.P.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)
Kumudunie, W.G.M.; Wijayasinghe, Y.S.; Wijesooriya, W.R.P.L.I.; Sunil-Chandra, N.P.; Namalie, K.D.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)