1. Orbital neuroendocrine tumors in three horses;Basher;Journal of the American Veterinary Medical Association,1997
2. Malignant rhabdoid tumour in the orbit of a horse;Hong;Journal of Comparative Pathology,1999
3. Orbital fibroma in a horse;Colitz;Veterinary Opththalmology,2000
4. Retrobulbar melanoma in a horse;Sweeney;Equine Veterinary Journal,1983
5. Neoplasia of the equine eye, adnexa, and orbit: a review of 68 cases;Lavach;Journal of the American Veterinary Medical Association,1977