Kumarage, C. A.,; Weerasooriya, M. K. B.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Tharaka, H. M. D.; Yapa, P. N.; Bamunuarachchige, C. T.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)