Chandrasekara, H. A. S. Y.; Vidanagamachchi, K.; Wickramarachchi, A. P. R.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Weerasekara, M. M.; Wickramarachchi, R.; Vidanagamachchi, K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)