@book{UBHD-65603490,
  author={Joswig, Petra},
  title={Abstrakter Expressionismus - "nature into action"},
  year={2001},
  pages={IV, 198 S.},
  language={ger},
  school={Heidelberg, Univ., Diss., 2002},
  keywords={USA / Malerei / Abstrakter Expressionismus},
  library={UB [Signatur: 2003 Q 27]},
}
@book{UBHD-65630965,
  author={Joswig, Petra},
  title={Abstrakter Expressionismus: "Nature into Action"},
  year={2003},
  pages={Online-Ressource (204 S.)},
  language={ger},
  school={Heidelberg, Univ., Diss., 2002},
  keywords={USA / Malerei / Abstrakter Expressionismus ; USA / Malerei / Action-Painting},
  url={http://www.ub.uni-heidelberg.de/archiv/3263},
  library={UB},
}