@incollection{Heller1980,
  author    = {Heller, Klaus},
  title     = {Zum Problem einer Reform der Fremdwortschreibung unter dem Aspekt von Zentrum und Peripherie des Sprachsystems},
  series = {Theoretische Probleme der deutschen Orthographie},
  editor    = {Nerius, Dieter and Scharnhorst, J{\"u}rgen},
  publisher = {Akademie-Verlag},
  address   = {Berlin},
  url       = {http://nbn-resolving.de/urn:nbn:de:bsz:mh39-83935},
  series    = {Sprache und Gesellschaft},
  number    = {Bd. 16},
  pages     = {162 -- 192},
  year      = {1980},
  language  = {de}
}
@incollection{HellerScharnhorst1997,
  author    = {Heller, Klaus and Scharnhorst, J{\"u}rgen},
  title     = {Kommentar zum W{\"o}rterverzeichnis},
  series = {Zur Neuregelung der deutschen Orthographie. Begr{\"u}ndung und Kritik},
  editor    = {Augst, Gerhard and Bl{\"u}ml, Karl and Nerius, Dieter and Sitta, Horst},
  publisher = {Niemeyer},
  address   = {T{\"u}bingen},
  isbn      = {3-484-31179-7},
  url       = {http://nbn-resolving.de/urn:nbn:de:bsz:mh39-80648},
  series    = {Reihe Germanistische Linguistik},
  number    = {Bd. 179},
  pages     = {269 -- 290},
  year      = {1997},
  language  = {de}
}