@workingPaper{BeckerSiemerHumkeZieglerStoeckle_2005, title={Elective nephron sparing surgery in 69 patients with renal cell carcinoma > 4 cm}, author={Becker, Frank and Siemer, Stefan and Humke, Ulrich and Ziegler, Manfred and Stoeckle, Michael}, doi={http://dx.doi.org/10.22028/D291-20732}, year={2005} }