@incollection{Heckmann1988,
  author    = {Friedrich Heckmann},
  title     = {Wider die kollektive Resignation},
  doi       = {10.25968/opus-57},
  url       = {http://nbn-resolving.de/urn:nbn:de:bsz:960-opus-827},
  year      = {1988},
  language  = {de}
}