1. Specification for Contact Lenses;BS 5562,1978
2. Contact lens fabrication tables;Creighton,1964
3. Rigid contact lens shape measurement;Guillon,1986
4. The specification of edge thickness of contact lenses;Jalie;The Contact Lens J,1981
5. A comparison of different rigid contact lenses: edge thickness and contour;Morris;J Am Optom Assoc,1981