Dikella, D. G. T. N.; Rajapakse, C. S. K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Pathirannehe, P. N. S.; Fernando, T. D.; Rajapakse, C. S. K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)