@article{UBHD-69045846,
  author={Hradetzky, Helmuth and Lippolt, Hans J.},
  title={Generation and distortion of Rb/Sr whole-rock isochrons},
  subtitle={effects of metamorphism and alteration},
  year={1993},
  pages={1175-1193},
  language={eng},
  issn={1617-4011},
  volume={5},
  number={6},
  note={Gesehen am 28.02.2023},
  journal={European journal of mineralogy},
}
@article{UBHD-68983693,
  author={Hradetzky, Helmuth and Lippolt, Hans J.},
  title={K-Ar dating of amphibole-bearing rocks in the Schwarzwald, SW Germany},
  subtitle={II. multiple sample Ar40/Ar39 systematics on three metabasites},
  year={1998},
  pages={119-142},
  language={eng},
  issn={0028-3649},
  number={3},
  journal={Neues Jahrbuch f{\"u}r Mineralogie},
}
@article{UBHD-69036379,
  author={Lippolt, Hans J. and Hradetzky, Helmuth and Hautmann, Siegfried},
  title={K-Ar dating of amphibole-bearing rocks in the Schwarzwald, SW Germany},
  subtitle={I: 40Ar/39Ar age constraints to Hercynian HT-metamorphism$dHans-Joachim Lippolt, Helmuth Hradetzky, Siegfried Hautmann},
  year={1994},
  pages={433-448},
  language={ger},
  issn={0028-3649},
  number={10},
  journal={Neues Jahrbuch f{\"u}r Mineralogie},
  keywords={Mineralogie / Schwarzwald},
}