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)
Herath, H. M. B. M. M. D.; Yapa, P. N.; Sandaruwan, M. K. K. D.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)