1. The Cornea, 2nd ed.;Maguire,1998
2. Smolin and Thoft's The Cornea: Scientific Foundations and Clinical Practice, 4th ed.;Rabinowitz,2005
3. Cornea, 2nd ed.;Feder,2005
4. Management of irregular astigmatism with rigid gas permeable contact lenses.;Jupiter;CLAO J,2000
5. Masking of irregular corneal topography with contact lenses.;Griffiths;CLAO J,1998