Aboumarzouk OM, Monga M, Kata SG, Traxer O, Somani BK (Oct 2012). «Flexible ureteroscopy and laser lithotripsy for stones >2 cm: a systematic review and meta-analysis.». J Endourol.26 (10): 1257-63. PMID22642568. doi:10.1089/end.2012.0217.
Aboumarzouk OM, Monga M, Kata SG, Traxer O, Somani BK (Oct 2012). «Flexible ureteroscopy and laser lithotripsy for stones >2 cm: a systematic review and meta-analysis.». J Endourol.26 (10): 1257-63. PMID22642568. doi:10.1089/end.2012.0217.