1. Castroviejo R. Keratoplasty for the treatment of keratoconus. Trans Am Ophthalmol Soc. 1948;46:127–53.
2. Appelbaum A. Keratoconus. Arch Ophthalmol. 1936;15(5):900–21.
3. Paufique L, Charleux J. Lamellar keratoplasty. In: Casey TA, editor. Corneal grafting. London: Butterworths; 1972. p. 121–76.
4. John T, et al. History. In: John T, editor. Corneal endothelial transplant. Panama: Jaypee-Highlights; 2010. p. 143–57.
5. Gasset AR. Lamellar keratoplasty in the treatment of keratoconus: conectomy. Ophthalmic Surg. 1979;10(2):26–33.