1. Edge shape and comfort of rigid lenses;La Hood;Am. J. Optom. Physiol. Opt.,1988
2. The influence of apex location, edge thickness and edge lift on the comfort of rigid contact lenses;Orsborn;Am. J. Optom. Physiol. Opt.,1988
3. A new concept in contact lens design - Parts I and II;Korb;J. Am. Optom. Assoc.,1970
4. Kontaktlinsen Verlag Optischer Fachveröffentlichungen GmbH;Baron,1981
5. Contact Lenses: Procedures and Techniques;Lowther,1992