@article{Hoffmann2005,
  author    = {Bernward Hoffmann},
  title     = {Mit Sprache spielen. Ideen f{\"u}r Gruppen},
  journal   = {Praxis Spiel und Gruppe},
  volume    = {18},
  number    = {4},
  pages     = {4 -- 13},
  year      = {2005},
}