Dassanayake, D. S.; De Silva, R. C. L.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Wijesekara, W. A. M. A.; Wijesinghe, K.D.; Kumara, K. G. N. P.; Manage, P. M.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
Nawarathne, W. N. C. P.; Mathota-Arachchige, Y. L. N.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)