@incollection{GroenemeyerSchmidt2015,
  author    = {Groenemeyer, Axel and Schmidt, Holger},
  title     = {Evaluation und Evaluationsforschung},
  series = {Handbuch Soziale Arbeit : Grundlagen der Sozialarbeit und Sozialp{\"a}dagogik},
  publisher = {Reinhardt},
  address   = {M{\"u}nchen},
  pages     = {13},
  year      = {2015},
  language  = {de}
}
@book{EquitGroenemeyerSchmidt2016,
  author    = {Equit, Claudia and Groenemeyer, Axel and Schmidt, Holger},
  title     = {Situationen der Gewalt},
  publisher = {Beltz Juventa},
  address   = {Weinheim ; Basel},
  isbn      = {978-3-7799-3339-7},
  pages     = {409},
  year      = {2016},
  language  = {de}
}
@incollection{GroenemeyerSchmidt2018,
  author    = {Groenemeyer, Axel and Schmidt, Holger},
  title     = {Evaluation und Evaluationsforschung},
  series = {Handbuch Soziale Arbeit : Grundlagen der Sozialarbeit und Sozialp{\"a}dagogik},
  publisher = {Ernst Reinhardt Verlag},
  address   = {M{\"u}nchen},
  pages     = {361 -- 373},
  year      = {2018},
  language  = {de}
}