Rangani, S. C.; Ranaweera, K. K. D. S.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Liyanapathirana, N.; Ranaweera, K. K. D. S.; Gunathilake, K. D. P. P.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)