Hapuararchchi, I; Hirimuthugoda, N.Y; Perera, P.W.A; Samaradiwakara, S; Gunawardane, T(Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2017-01-19)
Rajanayake, R.M.C.P.K.; Karunathilake, N.M.B.P.K.; Hewawasam, S.S.(Faculty of Humanities and Social Sciences, University of Ruhuna, Matara, Sri Lanka ., 2019-09-27)