Berger, J.; Cunningham, C.; Gawuseb, A.A. 1994. The uncertainty of data and dehorning black rhinos. Conservation Biology 8 (4): 1149-1152, figs. 1-2.
Berger, J.; Cunningham, C.; Gawuseb, A.A.; Lindeque, M. 1993. ‘Costs’ and short-term survivorship of hornless black rhinos. Conservation Biology 7 (4): 920-924, figs. 1-2, table 1.






