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)
Jayasooriya, D.; Gunawardene, Y.I.N.S.; Hapugoda, M.D.; Premaratna, R.; Manamperi, A.; de Silva, H.J.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2007)
Hapangama, H.A.D.C.; Gunawardene, Y.I.N.S.; Hapugoda, M.D.; Premaratna, R.; Dayanath, M.Y.D.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2007)