Ranathunga, R.M.T.B.; Gunathilaka, P.A.D.H.N.; Udayanga, N.W.B.A.L.; Wijegunawardena, N.D.A.; Abeyewickreme, W.(Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 2016)
Harishchandra, J.; Hapugoda, M.; Premaratne, R.G.; Abeyewickreme, W.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)