1. Surgery of the Cornea;Castroveijo, R.;Int Abstr Surg,1937
2. Keratoplasty in treatment of keratoconus;Castroveijo, R.;Arch Ophthalmol,1949
3. Long term results of corneal grafting in keratoconus;Ehlers, N.; Olsen, T.;Arch Ophthalmol (Kbh),1983
4. Keratoplasty in keratoconus;Keates, R.H.; Falkenstein, S.;AmJ Ophthamol,1972
5. One year observation of transplanted human corneal endothelium;Bourne, W.M.;Ophthalmology,1982