1. A case of retrocorneal membrane with an epithelial cyst following perforating keratoplasty;Kitagawa;Folia Ophthal. Jap.,1965
2. An unusual complication after keratoplasty;Mazow;Surv. Ophth.,1966
3. Cogan, D. G.: Personal communication, 1966.
4. Zur Keratoplastik;Fuchs;Z. Augenh.,1901
5. Transplantation of the cornea;Filatov;Arch. Ophth.,1935