Weerakkody, W.P.K.L.; Jayasinghe-Mudalige, U.K.; Udugama, J.M.M.; Fernando, A.P.S.(Faculty of Agriculture - Rajarata University of Sri Lanka, 2012-11-15)
Gunathilaka, K.A.K.M.M.; Chandrapala, A.G.; Silva, S.H.S.A. De.; Abeysingha, N.S.(Faculty of Agriculture - Rajarata University of Sri Lanka, 2011-09-16)