Dilshara, R.M.P.; Handapangoda, H.M.A.K.; Swarnathilake, D.S.G.G.C.; Amarasinghe, L.D.; Herath, H.M.I.K.; Udayanga, N.W.B.A.L.(Faculty of Science, University of Kelaniya, Sri Lanka, 2020)
Namawardana, D.G.K.K.; Wanigasekara, G.; Wanninayake, W.T.M.A.P.K.; Jayathilaka, K.M.D.C.; Wijesundera, R.P.; Siripala, W.(Faculty of Science, University of Kelaniya, Sri Lanka, 2020)