6Fernando CD, Ramsay LK, Glenn MP. Clinical efficacy of combined lithoclast and lithovac stone removal during ureteroscopy. J Urol,2000,164:40-42.
7Haupt G, Pannek J, Herde T, et al. The Lithovac : new suction device for the Swiss Lithoclast. J Endourol, 1995,9:375-377.
8Bagley D H. Expanding role of ureteroscopy and laser lithotripsy for treatment of proximal ureter and intra renal Calculi. Current Opinion in Urol, 2002,12 : 277 -280.
9Shroff S, Watson G M, Parikh A, et al. The holmium:YAG laser for ureteric stones. Br J Uro1,1996,78:836-839.
10Crasso M . Experience with holmium as an endoscopic lithotripsy. Urology, 1996,48 : 199-206.