1. The IUCN Red List of Threatened Species Loxodonta africana (www.iucnredlist.org/apps/redlist/details/12392/0).
2. Stiles D., Environ. Conserv. 34, 309 (2004).
3. Bulte E., Damania R., van Kooten G., J. Wildlife Manage. 71, 613 (2007).
4. Milliken T. Burn R. W. Sangalakula L. The Elephant Trade Information System (ETIS) and the Illicit Trade in Ivory (CoP15 Doc. 44.1 TRAFFIC Cambridge MA 2009); www.cites.org/eng/cop/15/doc/E15-44-01A.pdf.