Wijesinghe, M.R.; Jayatillake, B.A.D.M.C.; Ratnassoriya, W. D.(Department of Forestry and Environmental Science University of Sri Jayewardenepura, 2011)
Ranatunge, R. A. A. R.; Wijesinghe, M. R.; Ratnasooriya, W. D.(Department of Forestry and Environmental Science University of Sri Jayewardenepura, 2011)