Dilhari, R. K. H. M.; Jayawardena, B.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Abeysekara, A. M. R. B.; Jayawardena, B.; Wijayasiriwardhane, T. K.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)