Maduwanthi, A. K. M. R. B.; Karunarathna, B.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Dayarathna, S.G.A.R.M.; Karunarathna, B.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)