t Sas Rolfes, M. 1997. Elephants, rhinos and the economics of illegal trade. Pachyderm 24: 23-29, figs. 1-2.
t Sas Rolfes, M. 1997. Does CITES work? Four case studies. London, Institute of Economic Affairs (IEA Environment Briefing No. 4). pp. i, 1-10.
t Sas Rolfes, M. 1995. Rhinos: conservation, economics and trade-offs. London, Institute of Economic Affairs (Studies on the Environment No. 4). pp. 1-69.
t Sas Rolfes, M. 1993. The economics of rhino conservation: An economic analysis of policy options for the management of wild rhino populations in Africa. Thesis presented to University College London. pp. 1-83.
t Sas Rolfes, M. 1990. Privatizing the rhino industry. Saxonwold, The Free Market Foundation (Paper No. 900501). pp. 1-42.
t Sas Rolfes, M. 1990. The economics of rhinoceros extinction. Endangered Wildlife 2: 4-9, figs. 1-3.






