Chandima, A.M.B.; Pathiratne, K.A.S.; Dharmadasa, I.M.; Wijesundera, R.P.; de Silva, D.S.M.(Sri Lanka Association for the Advancement of Science, 2010)
Kumarage, W.G.C.; Wijesundera, R.P.; Seneviratne, V.A.; Jayalath, C.P.; Dassanayake, B.S.(Postgraduate Institute of Science Research Congress, Sri Lanka, 2014)