1. Multifokale Intraokularlinsen-eine Bestandsaufnahme;Hessemer;Klin Monatsbl Augenheilkd,1993
2. Optical performance of multifocal intraocular lenses;Holladay;J Cataract Refract Surg,1990
3. Funktionelle Ergebnisse nach implantation von refraktiven multifokalen In traokularlinsen vom Typ ARRAY;Schmidt;Ophthalmologe,1994
4. A prospective, randomized, double-masked comparison of a zonal-progressive multifocal intraocular lens and a monofocal intraocular lens;Steinert;Ophthalmology,1992
5. Pieh S, Weghaupt H, Rainer G, Skorpik C. Visual acuity and attitude to wearing glasses after implantation of a diffractive multifocal lens. In press, Min Monatsbl Augenheilkd