Siriwardhana, I.D.; Athauda, A.M.T.P.; Herath Banda, R.M.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Balasooriya, B.L.W.K.; Suganthan, B.; Vivehananthan, K.; Gunawardana, M.M.; Tharindi, P.W.M.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)