1. Zur quanten Theorie der Strahlung.;Einstein;Phys Zeit,1917
2. Stimulated optical radiation in ruby.;Maiman;Nature,1960
3. Laser in the treatment of localized prostate cancer.;Sander;J Urol,1984
4. Fundamentals of laser surgery.;Van Hillegersberg;Eur J Surg,1997
5. Smith JA Campbell’s Urology 1992 2923 41