Waduge, T.D.; Attanayaka, D.P.S.T.G.; Edirisinghe, N.M.H.; Chandrasekeran, N.V.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Herath, H.M.P.; Attanayaka, D.P.S.T.G.; Ranathunge, R.A.C.A.; Chandrasekaran, N.V.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Tennakoon, M.S.B.W.T.M.N.S.; Attanayaka, D.P.S.T.G.; Mahendra, R.A.R.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)