1. A traumatic fracture in a giant Eocene penguin from Antarctica;Acosta Hospitaleche;Antarct. Sci.,2012
2. Owls, Caves and Fossils;Andrews,1990
3. The Cambridge Encyclopedia of Human Paleopathology;Aufderheide,1998
4. Animal Diseases in Archaeology;Baker,1980
5. Trauma;Bennike,2008