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2. Cardona, H., Castroviejo, R. and DeVoe, A. G.: Techniques of prosthokeratoplasty: Evaluation of results with the Cardona keratoprosthesis. Presented at the XX Intern. Cong. Ophth. Munich, 1966.
3. Keratoprosthesis: Acrylic optical cylinder with supporting intralamellar plate;Cardona;Am. J. Ophth.,1962
4. Cardona, H.: The Cardona keratoprosthesis: A suspended through-and-through model. Presented at the XX Intern. Cong. Ophth. Munich, 1966.
5. Effect of intralamellar plastic membranes on corneal physiology;Knowles;Am. J. Ophth.,1961