Arasaretnam, S.; ayasundara, J. M. P. W.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
Perera, P. L. R. A.; Rajapakse, C. S. K.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Ratnayake, R.M.R.N.K.; Daundasekera, W.A.M.; Ariyarathne, H.M.; Ganehenege, M.Y.U.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)