Nikoobakht, Mohammad Reza, et al. “Transureteral Lithotripsy Versus Extracorporeal Shock Wave Lithotripsy in Management of Upper Ureteral Calculi: A Comparative Study”. Urology Journal, vol. 4, no. 4, Feb. 2009, pp. 207-11, doi:10.22037/uj.v4i4.98.