1. Hyperplasie de la Cornée;Szokalski;Ann. Ocul.,1865
2. Keloid of the cornea;Smith;Tr. Am. Ophth. Soc.,1940
3. The Pathology of the Eye. Vol. 1, Histology.;Parsons,1904
4. Zur Anatomie des Staphyloma Corneae;Fuchs;Arch. f. Ophth.,1918
5. Hypertrophic corneal scars (keloids);Fenton;Surv. Ophth.,1964