@article{JannMuszynski1994,
  author    = {Jann, Werner and Muszynski, Bernhard},
  title     = {Brandenburg},
  year      = {1994},
  language  = {de}
}
@article{MuszynskiJann1997,
  author    = {Muszynski, Bernhard and Jann, Werner},
  title     = {Brandenburg},
  isbn      = {3-593-35752-6},
  year      = {1997},
  language  = {de}
}