Hearne, J.W.; Swart, J.; Goodman, P.S. 1991. A conservation model for black rhino. Orion (Journal of ORSSA) 7 (1): 25-37.
Hearne, J.W.; Swart, J. 1991. Optimal translocation strategies for saving the black rhino. Ecological Modelling 59: 279-292, figs. 1-2, tables 1-4.
Swart, J.; Hearne, J.W.; Goodman, P.S. 1990. A conservation model for black rhino. System Dynamics '90 1: 1128-1136.






