@article{FranzJilge2013,
  author    = {Franz, Norbert P. and Jilge, Wilfried},
  title     = {Rußland, Ukraine, Weißrußland, Baltikum (Lettland, Estland)},
  isbn      = {978-3-86312-363-5},
  year      = {2013},
  language  = {de}
}