Sarathchandra, K.; Vidanagamachchi, K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Weerasekara, M. M.; Wickramarachchi, R.; Vidanagamachchi, K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)