Gunasekera, H.K.L.K.; Nugawela, A.; de Costa, W.A.J.M.; Attanayake, D.P.S.T.G.(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2002)
Djanaguiraman, M.; Durga Devi, D.; Sheeba, J.A.; Bangarusamy, U.; Babu, R.C.(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2004)
Abeykoon, A.M.K.C.K.; Fonseka, R.M.; Paththinige, S.; Weerasinghe, K.W.L.K.(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2010)