Senadheera, Shyamalie D.; Thanuthong, Thanongsak; Francis, David S.; Turchini, Giovanni M(Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2014-01-22)
Somaratne, S.; Karunarathna, K.D.K.; Weerakoon, S.R.; Abeysekera, A.S.K.; Weeresena, O.V.D.S.J.(Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2014-01-22)