Alden, M. (2005). «Lions in paradise: Lion similes in the Iliad and the Lion Cubs of IL. 18.318-22». The Classical Quarterly (55): 335–342. doi:10.1093/cq/bmi035.
Barnett, R., N. Yamaguchi, I. Barnes & A. Cooper (2006): Lost populations and preserving genetic diversity in the lion Panthera leo: Implications for its ex situ conservation. Conservation Genetics 7 (4), side 507–514. [1][død lenke].
uni-mainz.de
Burger, J. & al. (2004): Molecular phylogeny of the extinct cave lion Panthera leo spelaea. Molecular Phylogenetics and Evolution 30 (3): side 841–849, pfdArkivert 25. september 2007 hos Wayback Machine.
web.archive.org
Packer, C. & J. Clottes (2000): When Lions Ruled France. Natural History, side 52–57pdfArkivert 25. september 2007 hos Wayback Machine.
Burger, J. & al. (2004): Molecular phylogeny of the extinct cave lion Panthera leo spelaea. Molecular Phylogenetics and Evolution 30 (3): side 841–849, pfdArkivert 25. september 2007 hos Wayback Machine.