Sanjeewa, R.P.N.P.; Fernando, L.C.P.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Mayooran, P.; Fernando, L.C.P.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Wijebandara, K.M.N.; Fernando, L.C.P.; Fernandopulle, M.N.D.; Suwandharathne, N.I.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2006)