Wijerathna, M.A.P.Edirisinghe, J.P.2016-04-262016-04-261994Proceedings of the 50th Annual Sessions of the Sri Lanka Association for the Advancement of Science:p.169-170https://dl.nsf.gov.lk/handle/1/23208Biological SciencesArticleRG/92/B/005FR 0554, FR 0961T