Abeykoon, A.M.S.J.P.; Rajapaksha, R.P.D.D.(International Postgraduate Research Conference 2019, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 2019)
Rajakaruna, L.L.; Amarathunga, G.(International Postgraduate Research Conference 2019, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 2019)