1. The Vertebrate Remains from Scole-Dickleburgh, Excavated in 1993 (Norfolk and Suffolk) A140 and A143 Road Improvement Project;Baker,1998
2. An eagle, Haliaeetus albicilla (L.), skull from Roman Leicester, England, with some specultations concerning the palaeoecology of the Soar valley;Baxter;Circaea,1993
3. Southwark Excavations, 1972-1974;Bird,1978
4. The Natural History. Pliny the Elder;Bostock,1855
5. The animal bone;Cussons,2010