Ambegoda, A. L. D. V. T.; Egodage, S. M.; Maddumaarachchi, M.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Dikella, D. G. N. V.; Maddumaarachchi, M.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)