Gunawardana, K. D. R.; Vidanagamachchi, K.; Nanayakkara, L. D. J. F.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Leelarathna, W. D. S. R.; Bandara, W. A. R. T. W.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Kumarasiri, A.; Attygalle, D.; Amarasinghe, D. A. S.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)