Mwakalobo, A. B. S.; Kajembe, G. C; Silayo, D.S; Nzunda, E.; Zahabu, E.; Maliondo, S.; Kimaro, D. N.(International Institute for Environment and Development (UK), 2011)
Malimbwi, R.E.; Eid, T.; Chamshama, S.A.O.(Department of Forest Mensuration and Management Faculty of Forestry and Nature Conservation Sokoine University of Agriculture, 2016)