Priyasad, H. A. D.; Kulatunga, D. D. S.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Ahamed, M. I. S.; Dimithrie, P. S.; Rajapakse, R. A. C. P.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)