Weerasinghe, W. P. T. D.; Vidanagamachchi, K.; Nanayakkara, L. D. J. F.(4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
Ilangakoon, M. T. S.; Weerabahu, W. M. S. K.; Wickramarachchi, R.(Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)