@incollection{sbs_baumbach1997,
  author    = {Baumbach, Erdmann J.M.},
  booktitle = {Namibian Languages: Reports and Papers},
  editor    = {Haacke, Wilfrid H. and Elderkin, Edward E.},
  publisher = {Rüdiger Köppe},
  series    = {Namibian African Studies},
  title     = {Languages of the Eastern Caprivi},
  volume    = {4},
  year      = {1997}
}