Parker, Kim, de Vos, Alta, Clements, Hayley S, Biggs, Duan, Biggs, Reinette. Impacts of a trophy hunting ban on private land conservation in South African biodiversity hotspots:. 2020.

de Vos, Alta, Clements, Hayley S, Biggs, Duan, Cumming, Graeme S. Wiley; 2019. The dynamics of proclaimed privately protected areas in South Africa over 83 years.