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)
Fernando, C.N.; Yakandawala, K.; Attanayaka, D.P.S.T.G.; Perera, P.I.P.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)
Ekanayake, E.M.E.G.P.; Attanayake, A.M.K.B.; Perera, P.I.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Rathnasekera, U.S.; Kannangara, K.N.; Perera, P.I.P.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)