@article{BastianHensenLenzmannetal.2009,
  author    = {Bastian, Pascal and Hensen, Gregor and Lenzmann, Virginia and Lohmann, Anne and Ziegler, Holger and B{\"o}ttcher, Wolfgang},
  title     = {Evaluationsforschung zu Wirkungen und Mechanismen Fr{\"u}her Hilfen},
  series = {Soziale Passagen},
  volume    = {1},
  journal   = {Soziale Passagen},
  number    = {2},
  pages     = {259 -- 266},
  year      = {2009},
  language  = {de}
}
@article{HentschkeBastianDellbrueggeetal.2011,
  author    = {Hentschke, Anna-Kristen and Bastian, Pascal and Dellbr{\"u}gge, Virginia and Lohmann, Anne and B{\"o}ttcher, Wolfgang and Ziegler, Holger},
  title     = {Parallelsystem Fr{\"u}he Hilfen?},
  series = {Soziale Passagen},
  volume    = {3},
  journal   = {Soziale Passagen},
  number    = {1},
  pages     = {49 -- 59},
  year      = {2011},
  language  = {de}
}