Alahakoon, A. A. C. B.; Abeysiriwardena, D. S. D. Z.; Damunupola, J. W.; Gam-Arachchige, N. S.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)
Sivashankar, S.; Gunathilake, K. D. P. P.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)