Deepanada, K.H.M.A.; De Silva, W.A.J.P.; Chandana, E.P.S.; Priyanka, S.B.T.; Weerasinghe, S.S.S.; Dharmasiri, H.W.; Samayawardhena, L.A.(Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)
De Silva, W.A.J.P.; Deepananda, K.H.M.A.; Chandana, E.P.S.; Peiris, L.D.C.; Samayawardhena, L.A.(Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)