@article{Landua2007,
  author    = {Landua, Detlef},
  title     = {Einf{\"u}hrung},
  isbn      = {978-3-8258-0621-7},
  year      = {2007},
  language  = {de}
}
@article{LanduaGrossmann2007,
  author    = {Landua, Detlef and Großmann, Heidrun},
  title     = {Soziale Schulqualit{\"a}t und Schulverweigerung},
  isbn      = {978-3-8258-0621-7},
  year      = {2007},
  language  = {de}
}
@article{Landua2007,
  author    = {Landua, Detlef},
  title     = {Migrationsw{\"u}nsche},
  isbn      = {978-3-8258-0621-7},
  year      = {2007},
  language  = {de}
}