@book{Esser2006,
  author    = {Esser, Hartmut},
  title     = {Migration, Sprache und Integration},
  series = {AKI-Forschungsbilanz},
  journal   = {AKI-Forschungsbilanz},
  number    = {4},
  publisher = {WZB},
  address   = {Berlin},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-bbdig-111},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {119},
  year      = {2006},
  language  = {de}
}
@book{FthenakisGisbertGriebel2007,
  author    = {Fthenakis, Wassilios E. and Gisbert, Kristin and Griebel, Wilfried},
  title     = {Auf den Anfang kommt es an},
  series = {Bildungsforschung},
  volume    = {16},
  journal   = {Bildungsforschung},
  edition   = {Unver{\"a}nd. Nachdr.},
  address   = {Bonn [u.a.]},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-bbdig-136},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {251},
  year      = {2007},
  language  = {de}
}
@book{MuehlenkampGloeckner2010,
  author    = {M{\"u}hlenkamp, Holger and Gl{\"o}ckner, Andreas},
  title     = {Rechtsvergleich kommunale Doppik},
  series = {Speyerer Forschungsberichte ; 260},
  journal   = {Speyerer Forschungsberichte ; 260},
  edition   = {Repr.},
  publisher = {Deutsches Forschungsinstitut f{\"u}r {\"o}ffentliche Verwaltung Speyer},
  address   = {Speyer},
  isbn      = {978-3-932112-98-0},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-bbdig-154},
  pages     = {Getr. Z{\"a}hlung},
  year      = {2010},
  language  = {de}
}