@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{StraetzSolbachHolstSolbach2007,
  author    = {Str{\"a}tz, Rainer and Solbach, Regina and Holst-Solbach, Friedemann},
  title     = {Bildungsh{\"a}user f{\"u}r Kinder von drei bis zehn Jahren},
  address   = {Berlin},
  organization    = {Bundesministeriumf{\"u}r Bildung und Forschung (BMBF), Referat {\"O}ffentlichkeitsarbeit},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-bbdig-128},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {142},
  year      = {2007},
  language  = {de}
}