Wazeer, F.S.; Rathnayake, A.G.N.K.; Wijesinghe, U.D.T.M.(Proceedings of the Undergraduate Research Symposium (HUG 2019), Faculty of Humanities, University of Kelaniya. Sri Lanka, 2019)
Wijesinghe, U.D.T.M.; Jayarathne, V.; Hewage, H.O.W.(Proceedings of the Undergraduate Research Symposium (HUG 2019), Faculty of Humanities, University of Kelaniya, Sri Lanka, 2019)