Dalpadado, C.P.R.D.; Amarasinghe, L.D.; Gunathilaka, P.A.D.H.N.(International Postgraduate Research Conference 2019, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 2019)
Ranasinghe, H.A.K.; Amarasinghe, L.D.(19th Conference on Postgraduate Research, International Postgraduate Research Conference 2018, Faculty of Graduate Studies,University of Kelaniya, Sri Lanka, 2018)