Wijayawardhana, H. N. A. M.; Hewaarachchi, A. P.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Sachithra, S. A. L.; Liyanage, U. P.; Wijeyaratne, W. M. D. N.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)