4Kourambas J, Delvecchio FC, Preminger GM, et al. Low-power holmium laser for the management of urinary tract calculi, structures, and tumors. J Endourol,2001,15 :529-532.
5Mugiya S,Nagata M, Un-No T, et al. Endoscopic managemeng of impacted ureteral stones using a small caliber ureteroscope and a laser lithotriptor. J Uro1,2000,164:329-331.
6Bagley D, Erhard M Use of the holmium laser in the upper urinary tract. Teeh Urol, 1995,1:25-30.
7Thomas Zorcher, Jurgen Hochberger, Kari-michaelSchrott, et al. In vitro study concerning the efficiency of the Frequency-Doubled Double-Pulse Neodymium : YAG Laser (FREDDY) for lithotripsy of calculi in the urinary tract. Lasers Surg Med,1999 ,25 :38-42.
8Zorcher T,Hochberger J,Schrott KM,et al.In vitro study concerning the efficiency of the frequency-doubled-double-pulse neodymium:YAG Laser (FREDDY) for lithotripsy of calculi in the urinary tract.Lasers Surg Med,1999 ,25 :38-42.
9Sofer M,Watterson JD,Wollin TA,et al.Holmium:YAG laser lithotripsy for upper urinary tract calculi in 598 patients.J Urol,2002,167:31-34.
