8[1]Wollin TA,Razvi HA,Denstedt JD.Identifying stone composition using infrared analysis of filtered urine after ureteroscopic lithotripsy.J endourol,1999,13 (7):499-503.
9[2]Brewer AV,Elbahnasy AM,Bercowsky E,et al.Mechanism of ureteral stent flow:a comparative in vivo study.J endourol,1999,13 (12):269-271.