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)
Perera, U.I.P; Ratnasekera, D; Madurangi, S.A.P; Senanayake, S.G.J.N; Bentota, A.P(Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)