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)
Aththanayake, W.K.A.M.D.S.; Jayasinghe-Mudalige, U.K.; Dissanayake, S.N.; Udugama, J.M.M.(Faculty of Agriculture - Rajarata University of Sri Lanka, 2011-09-16)