@article{LiebersPrengelBieber2008,
  author    = {Liebers, Katrin and Prengel, Annedore and Bieber, G{\"o}tz},
  title     = {Einleitung},
  isbn      = {978-3-407-32090-2},
  year      = {2008},
  language  = {de}
}
@article{Prengel2008,
  author    = {Prengel, Annedore},
  title     = {Heterogenit{\"a}t in der FLEX : Befunde, offene Fragen, n{\"a}chste Schritte},
  isbn      = {978-3-407-32090-2},
  year      = {2008},
  language  = {de}
}