Kulangana, T.; Bandara, W. A. R. T. W.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Wijayasenarathne, K. A. S. H.; Bandara, W. A. R. T. W.(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)