@article{UBHD-68894123,
  author={Knoll, Thomas and Musial, Anton and Trojan, Lutz and Ptashnyk, Taras and Michel, Maurice Stephan and Alken, Peter and K{\"o}hrmann, Kai-Uwe},
  title={Measurement of renal anatomy for prediction of lower-pole caliceal stone clearance},
  subtitle={reproducibility of different parameters},
  year={2003},
  pages={447-451},
  language={eng},
  issn={1557-900X},
  volume={17},
  number={7},
  note={Gesehen am 11.03.2022 ; Published Online: 6 Jul 2004},
  journal={Journal of endourology},
  doi={10.1089/089277903769013577},
}
@article{UBHD-68895934,
  author={Michel, Maurice Stephan and Knoll, Thomas and Ptashnyk, Taras and K{\"o}hrmann, Kai-Uwe and Alken, Peter},
  title={Flexible ureterorenoscopy for the treatment of lower pole calyx stones},
  subtitle={influence of different lithotripsy probes and stone extraction tools on scope deflection and irrigation flow},
  year={2002},
  pages={312-317},
  language={eng},
  issn={1873-7560 and 1421-993X},
  volume={41},
  number={3},
  note={Gesehen am 17.03.2022},
  journal={European urology},
  doi={10.1016/S0302-2838(02)00052-0},
}
@article{UBHD-68894246,
  author={Michel, Maurice Stephan and Ptashnyk, Taras and Musial, Anton and Braun, Peter-Martin and Lenz, Sylvia T. and Alken, Peter and K{\"o}hrmann, Kai-Uwe},
  title={Objective and subjective changes in patients with Peyronie's disease after management with shockwave therapy},
  year={2003},
  pages={41-44},
  language={eng},
  issn={1557-900X},
  volume={17},
  number={1},
  note={Published Online: 6 Jul 2004 ; Gesehen am 11.03.2022},
  journal={Journal of endourology},
  doi={10.1089/089277903321196788},
}
@article{UBHD-67926149,
  author={Ptashnyk, Taras and Michel, Maurice Stephan and Alken, Peter and K{\"o}hrmann, Kai-Uwe},
  title={Comparative investigations on the retrieval capabilities of various baskets and graspers in four ex vivo models},
  year={2002},
  pages={406-410},
  language={eng},
  issn={1873-7560 and 1421-993X},
  volume={41},
  number={4},
  note={Gesehen am: 18.01.2016},
  journal={European urology},
  doi={10.1016/S0302-2838(02)00063-5},
}
@book{UBHD-65606349,
  author={Ptashnyk, Taras},
  title={Die flexible Ureterorenoskopie zur Harnsteintherapie im oberen Harntrakt},
  subtitle={restrospektive Auswertung und experimentelle Untersuchungen zur Optimierung der Methode},
  year={2002},
  pages={78 Bl.},
  language={ger},
  school={Heidelberg, Univ., Diss., 2003},
  library={UB [Signatur: 2003 U 205] ; UW [Signatur: Diss. 03.77]},
}