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