Weerasinghe, M. L. A.; Wanninayake, W. T. M. A. P. K.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.(Faculty of Science, University of Kelaniya, Sri Lanka, 2021)
Thivakarasarma, T.; Lakmal, A. A. I.; Dassanayake, B. S.; Velauthappillai, D.; Ravirajan, P.(Faculty of Science, University of Kelaniya, Sri Lanka, 2021)