@article{EsserGrueningKrugetal.2005,
  author    = {G{\"u}nter Esser and Th. Gr{\"u}ning and W. Krug and P. May and K. Meiers and M. Trebert},
  title     = {Wie Kindern mit Lernschwierigkeiten wirksam helfen?},
  year      = {2005},
}