Dasanayaka, D.M.C.M.K.; Prasadi, V.P.N.; Wijewardane, A.; Jayasinghe, C.V.L.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)
Jayasundara, J.M.D.M.; Ranundeniya, R.M.N.S.; Lakmali, W.A.S.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Wimalasena, S.S.; Kularatne, M.G.; Amarasinghe, U.S.; Jayasinghe-Mudalige, U.K.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)