Ranasinghe, B.M.C.M.; Sumanasena, H.A.; Amarakoon, A.M.E.S.; Lakmali, W.A.S.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Wijepala, S.A.T.P.; Lakmali, W.A.S.; Alawathugoda, R.M.D.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
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)