Wijewardhana, W.G.L.P.; Edirisinghe, J.; Auwardt, D.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2006)
Mayooran, P.; Fernando, L.C.P.; Fernandopulle, M.N.D.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Rankothge, D.G.D.C.; Kumari, H.M.P.S.; Perera, P.I.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Silva, S.P.P.; Nayanakantha, N.M.C.; Seneviratne, P.; Nugawela, A.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Niran, H.M.L.; Rodrigo, V.H.L.; Nayanakantha, N.M.C.N.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)