Nanayakkara, K.A.D.S.A.; Chandrasekara, N.V.; Jayasundara, D.D.M.(Proceedings of the 69th Annual Session of the Sri Lanka Association for Advancement of Science -SLASS, 2013)
Dissanayake, P.L.; Chandrasekara, N.V.; Jayasundara, D.D.M.(Proceedings of the 69th Annual Session of the Sri Lanka Association for Advancement of Science -SLASS, 2013)