1. Priority ratings for conservation of Indian primates;Choudhury;Oryx,1988
2. Working towards a “Top 50” listing;Cunningham;Medicinal Plant Conservation,1996
3. Wild Flowers of Northern South Africa;Fabian,1997
4. The Transvaal, South Africa, Threatened Plants Programme;Fourie;Biological Conservation,1986
5. Relative occupancy, endemism, taxonomic distinctiveness and vulnerability: prioritizing regional conservation actions;Freitag;Biodiversity and Conservation,1997