Abeyewickreme, W.; Hapangama, H.A.D.C.; Gunawardene, Y.I.N.S.; Hapugoda, M.D.; Gunawardena, N.K.; Wickremasinghe, A.R.(Sri Lanka Association for the Advancement of Science, 2008)
Hapugoda, M.D.; Jayasooriya, D.H.S.W.; Gunawardene, Y.I.N.S.; Wellawaththage, C.; Premaratna, R.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2007)
Palliyaguruge, R.H.; Gunawardene, Y.I.N.S.; Manamperi, A.; Wijekoon, C.N.; Wellawaththage, L.C.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2008)
Manamperi, A.; Gunawardene, Y.I.N.S.; Bandara, K.B.A.T.; Dayanath, M.Y.D.; Hapuarachchi, H.A.C.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2004)