Jayasena, M.K.A.S.; Iqbal, M.C.M.; Attanayaka, D.P.S.T.G.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Rathnasekara, G.N.C.; Gajanayake, K.G.M.C.P.B.; Abeyagunawardene, C.D.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Galagoda, R.P.W.M.R.R.K.B.; Gajanayake, K.G.M.C.P.B.; Silva, D.A.C.S.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Samarakkody, G.S.; Jayathilake, Y.M.C.D.; Bandaranayake, C.M.; Weerasinghe, W.A.D.S.S.; Perera, G.A.K.S.(Faculty of Applied Sciences, Wayamba University of Sri Lanka, Kuliyapitiya, 2016)
Balasuriya, B.K.A.; Bandupriya, H.D.D.; Fernando, S.C.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Palliyaguru, S.J.; Gunarathne, G.P.; Abeysinghe, D.C.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)