1. Fitzpatrick TB, Polano MK, Suurmond D. Color Atlas and Synopsis of Clinical Dermatology. New York: McGraw-Hill; 1983: 6.
2. Roitt IM, Brostoff J, Male DK. Immunology. St. Louis: CV Mosby; 1987; 22: 1.
3. Grayson M. Immune and mucous membrane diseases. In: Diseases of the Cornea. St. Louis: CV Mosby; 1983: 347.
4. Nussenblatt RB, Palestine. Anterior uveitis. In: Uveitis: Fundamentals and Clinical Practice. Chicago: Year Book Medical Publishers, 1989: 164.
5. Opremcak EM. Topical Therapy for Iritis. Clinical Modules for Ophthalmologists, vol. 9, module 7. San Francisco: American Academy of Ophthalmology; 1991.