Key points are not available for this paper at this time.
E. J. Milner-Gulland, N. Leader-Williams, A Model of Incentives for the Illegal Exploitation of Black Rhinos and Elephants: Poaching Pays in Luangwa Valley, Zambia, Journal of Applied Ecology, Vol. 29, No. 2 (1992), pp. 388-401
Milner‐Gulland et al. (Wed,) studied this question.