Hapugoda, M.D.; Gunawardena, N.K.; Kusumawathie, P.H.D.; Jayasooriya, G.A.J.S.K.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2009)
Sumanadasa, S.D.M.; Hapuarachchi, C.; Bandara, K.B.A.T.; Wellawaththage, L.C.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2008)