@article{KahlertCechGiestetal.2004,
  author    = {Kahlert, Joachim and Cech, Diethard and Giest, Hartmut and Hempel, Marlies and Wittkowske, Steffen and Hartinger, Andreas},
  title     = {Sachunterricht nach PISA und IGLU},
  isbn      = {3-7065-4020- 7},
  year      = {2004},
  language  = {de}
}
@article{HartingerGiest2022,
  author    = {Hartinger, Andreas and Giest, Hartmut},
  title     = {Perspektivrahmen Sachunterricht},
  series = {Handbuch Didaktik des Sachunterrichts},
  journal   = {Handbuch Didaktik des Sachunterrichts},
  edition   = {3. {\"u}berarb.},
  publisher = {Klinkhardt},
  address   = {Bad Heilbrunn},
  isbn      = {978-3-8252-8801-3},
  doi       = {10.36198/9783838588018},
  pages     = {277 -- 282},
  year      = {2022},
  language  = {de}
}
@article{HartingerGiestKahlert2008,
  author    = {Hartinger, Andreas and Giest, Hartmut and Kahlert, Joachim},
  title     = {Kompetenzniveaus im Sachunterricht : eine Einf{\"u}hrung in den Forschungsband},
  year      = {2008},
  language  = {de}
}
@article{GiestHartingerKahlert2008,
  author    = {Giest, Hartmut and Hartinger, Andreas and Kahlert, Joachim},
  title     = {Kompetenzniveaus im Sachunterricht},
  year      = {2008},
  language  = {de}
}
@article{GiestGlaeserHartinger2019,
  author    = {Giest, Hartmut and Gl{\"a}ser, Eva and Hartinger, Andreas},
  title     = {Editorial},
  series = {Methodologien der Forschungen zur Didaktik des Sachunterrichts},
  journal   = {Methodologien der Forschungen zur Didaktik des Sachunterrichts},
  publisher = {Klinkhardt},
  address   = {Bad Heilbrunn},
  isbn      = {978-3-7815-2335-7},
  pages     = {7 -- 12},
  year      = {2019},
  language  = {de}
}
@article{GiestHartingerKahlert2008,
  author    = {Giest, Hartmut and Hartinger, Andreas and Kahlert, Joachim},
  title     = {Auf dem Weg zu einem Kompetenzmodell f{\"u}r den Sachunterricht : eine vergleichende Zusammenschau},
  year      = {2008},
  language  = {de}
}