Karunarathna, K.D.N.Buddhika, A.N.Kahatapitiya, K.R.M.G.Gunasekera, M.Y.2019-02-132019-02-132010Transactions - 2010 Volume I - PART B Technical Papers:p.13-18https://dl-iesl.nsf.gov.lk/handle/1/1064Article