1. Corneal Transplantation;Leigh,1966
2. Stone, W., Jr., and Seiderman, M.: The plastic artificial cornea (an 18-year study). Basic principles and preliminary clinical report. Removable insert implants. Corneo-Plastic Surgery Proc. Second Int. Corneo-Plastic Conf. London, 1967, p. 357.
3. Present status of prosthokeratoplasty;Castroviejo;Am. J. Ophthalmol.,1969
4. Mushroom transcorneal keratoprosthesis (bolt and nut);Cardona;Am. J. Ophthalmol.,1969
5. Perforating kerato-prosthesis, 1970. The Choyce MK II two-piece perforating keratoprosthesis;Choyce;Trans. Ophthalmol. Soc. U.K.,1967