Thamilini, J.; Silva, K.D.R.R,; Jayasinghe-Mudalige, U.K.; Edirisinghe, J.C.; Herath, H.M.L.K.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)
Rajapaksha, R.P.K.M.; Suwandharathne, N.I.; Amarasinghe, K.G.A.P.K.; Aratchige, N.S.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Kulathilaka, K.C.S.; Ratnayake, R.H.M.K.; Amarasinghe, A.A.T.B.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Aththanayaka, A.M.L.; Rupasingha, L.; Attanayaka, D.P.S.T.G.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)