Pushpakanthi, U. B. N.; Perera, S. S. N.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Dalpadado, C. P. R. D.; Amarasinghe, L. D.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Dalpadado, C. P. R. D.; Amarasinghe, L. D.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)