Gamini, G. L. M.; Vidanagamachchi, K.; Wickramarachchi, 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)