1. The orbit and globe;Mould,2002
2. Exophthalmos in dogs and cats – part II;McCalla;Comp. Cont. Educ. Pract. Vet.,1989
3. The eyelids and nictitating membrane;Petersen-Jones,2002
4. Nonsurgical correction of entropion in Shar Pei puppies;Johnson;Vet. Med.,1988
5. Diseases and surgery of the canine eyelid;Bedford,1998