Hapangama, H.A.D.C.; Hapugoda, M.D.; Gunawardene, Y.I.N.S.; Premaratna, R.; Dayanath, M.Y.D.; Abeyewickreme, W.(Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, 2007)
Gunathilaka, P.A.D.H.N.; Ranathunge, R.M.T.B.; Hapugoda, M.D.; Wickremasinghe, A.R.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2014)