1. Podocarps in Africa: temperate zone relicts or rainforest survivors?;Adie,2011
2. Age and origin of Sonoran Desert vegetation;Axelrod,1979
3. Late Cretaceous and Tertiary vegetation history of Africa;Axelrod,1978
4. Cenozoic macro-plants;Bamford,2000
5. Diversity of the woody vegetation of Gondwanan southern Africa;Bamford;Gondwana Res.,2004