Bozkurt, I. H., T. Yonguc, B. Arslan, T. Degirmenci, B. Gunlusoy, O. Aydogdu, and O. Koras. “Minimally Invasive Surgical Treatment for Large Impacted Upper Ureteral Stones: Ureteroscopic Lithotripsy or Percutaneous Nephrolithotomy?”. Canadian Urological Association Journal, vol. 9, no. 3-4, Mar. 2015, pp. e122-5, doi:10.5489/cuaj.2280.