Williams, DL; Kim (Jul–Aug 2009). "Feline entropion: a case series of 50 affected animals (2003-2008)". Veterinary Ophthalmology. 12 (4): 221–226. doi:10.1111/j.1463-5224.2009.00705.x. PMID19604337.
Williams, DL; Kim (Jul–Aug 2009). "Feline entropion: a case series of 50 affected animals (2003-2008)". Veterinary Ophthalmology. 12 (4): 221–226. doi:10.1111/j.1463-5224.2009.00705.x. PMID19604337.