Abeysekara, A.H.R.P.; Delpitiya, D.G.P.S.; Gunarathna, M.H.J.P.; Silva, S.H.S.A. De.(Faculty of Agriculture - Rajarata University of Sri Lanka, 2012-11-15)
Senadheera, K.H.L.M.; Chandrapala, A.G.; Gunarathna, M.H.J.P.; Silva, S.H.S.A. De.(Faculty of Agriculture - Rajarata University of Sri Lanka, 2011-09-16)