1. The Living Elephants – Evolution, Ecology, Behaviour and Conservation;Sukumar,2003
2. The Retreat of the Elephants: An Environmental History of China;Elvin,2004
3. Movements and corridors of African elephants in relation to protected areas;Douglas-Hamilton;Naturwissenschaften,2005
4. Tracking elephants using GPS technology;Douglas-Hamilton;Pachyderm,1998
5. Coexistence between people and elephants in African savannas;Hoare;Conserv. Biol.,1999