Altunkol, A., M. Savas, H. Ciftci, M. Gulum, I. Yagmur, and M. Bitiren. “Primary Giant Cell Malignant Fibrous Histiocytoma-Associated With Renal Calculus”. Canadian Urological Association Journal, vol. 8, no. 3-4, Mar. 2014, pp. e193-5, doi:10.5489/cuaj.1485.