4SCARPA R M,DELISA A,PORRU D,et al.Holmium:YAG laser uretero lithotripsy[J].Eur Urol,1999,35(3):233-238.
5KOURAMBAS J,DELVECCHIO F C,PREMINGER G M,et al.Low power holmium laser for the management of urinary tract calculi,structures and tumors[J].J Endourol,2001,15(5):529-532.
6MUGIYA S,NAGATA M,UN NO T,et al.Endoscopic managemeng of impacted ureteral stones using a small caliber uretero scope and a laser lithortriptor[J].J Urol,2000,164(2):329-331.
7BAGLEY D,ERHARD M.Use of the holmium laser in the upperurinary tract[J].Tech Urol,1995,1(1):25-30.
8EBENT A,STANGL J,KUEHN R,et al.The frequency doubled double pulse Neodym:YAG laser lithotripter(FREDDY) in lithotripsy of urinary stones.First Clinical experience[J].Urologe A,2003,42(6):825-833.
9ZORCHER T,HOCHBERGER J,SCHROTT K M,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[J].Lasers Surg Med,1999,25(1):38-42.
