Navarathna, N. M .C. M.; Pathiratne, K. A. S.; De Silva, D. S. M.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
Irosha, K. P. C.; De Silva, D. S. M.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)