@article{Wahl2009,
  author    = {Michael Wahl},
  title     = {Zwei Sprachen = Zwei Systeme?},
  journal   = {Spektrum Patholinguistik},
  series    = {ein {\"U}berblick {\"u}ber die neuronalen Grundlagen},
  volume    = {2},
  pages     = {9 -- 30},
  year      = {2009},
}