Swarnathilake, D.S.G.G.C.; Abeysinghe, D.C.; Liyanage, D.N.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Jayaweera, S.L.D.; Basnayake, B.M.V.S.; Dassanayake, E.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Bandara, D.R.S.S.; Athauda, A.M.T.P.; Randeniya, R.M.R.; Rathnayake, R.D.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2006)
Madhubhashini, N.G.N.; Anjalee, G.H.I.; Abeynayake, N.R.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)