Fernando, P. A.; Nanayakkara, L. D. J. F.; Tharaka, V. K.; Niwunhella, D. H. H.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Warnakulasuriya, M. M.; Vidanagamachchi, K.; Niwunhella, D. H. H.; Nanayakkara, L. D. J. F.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Weerasinghe, W. P. T. D.; 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)
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)