1. Corneal grafting;Franceschetti;Trans Ophthalmol Soc UK,1949
2. Artificial corneal implants;Day;Trans Am Ophthalmol Soc,1957
3. Künstliche Hornhautimplantate (Keratoprothetik);Hruby;Wien Klin Wochenschr,1980
4. Keratoplasty;Mannis;Surv Ophthalmol,1981
5. Keratoprostheses;Barber;Int Ophthalmol Clin,1988