Waidyathilaka, E.; Tharaka, V. K.; Wickramarachchi, R.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Wickramasena, R. D. G. K.; Tharaka, V. K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)