6Mattelaer P, Sshroder T, Fischer N, etal. In situ ex- tracorporeal shockwave lithotripsy of distal ureteral stones: parameters for the rapeutic success[J]. Urol Int,1994,53:87-91.
7Dretler S P Spencer B A. CT and stone fragility[J]. J Endou rol, 2001,15:31-36.
8Deveci S, Coskun M, Tekin M I, et al. Spiral computed tomography: role in determination of chemical corn position of pure and mixed urinary stones-an in vitro study[J]. Urology,2004,64(2) :237-240.
9Wollin T A, Razvi H A, Denstedt J D. Identifying stone composition using infraredanalysis of filtered urine after ureteroscopic lithotripsy[J]. J Endourol, 1999,13 : 499-503.
10Proebstle T M, Gul D, Lehr H A, et al. Infrequent early recanalization of greater saphenous vein after endovenous laser treatment[J]. J Vasc Surg,2003,38137: 511.
