1. Chapter 134: Astigmatic Keratotomy.;Agarwal;Textbook of Ophthalmology,12003
2. Hin Fall von hochgradigem Hornhautstastigmatismus nach Staarextraction: Bessergung auf operativem Wege;Schiotz;Arch Augenheilkd,1885
3. Experimentelle Untersuchungen uber Entstehung von Astigmatismus durch nich-perforirende Corneawunden;L.J.;Graefes Arch Ophthalmol,1898
4. Paired arcuate keratotomy. A surgical approach to mixed and myopic astigmatism;Duffey;Arch Ophthalmol,1988
5. Surgical correction of complicated myopic astigmatism by means of dissection of circular ligament of cornea;Fyodorov;Ann Ophthalmol,1981