Hapuarachchi, H.A.C.; Dayanath, M.Y.D.; Abeysundara, S.; Bandara, K.B.A.T.; Abeyewickreme, W.; de Silva, N.R.(Sri Lanka Association for the Advancement of Science, 2005)
Abeyrathna, H.M.W.N.; Kariyawasam, I.S.; Jinendra, B.M.S.; Weerasinghe, K.D.N.; Liyanage, J.A.(Sri Lanka Association for the Advancement of Science, 2005)