@article{hildebrandt1875,
  author  = {Hildebrandt, N. M.},
  journal = {Zeitschrift für Ethnologie},
  key     = {Hildebrandt (1875)},
  pages   = {1-15},
  title   = {Vorlaufige Bemerkungen uber die Somal},
  volume  = {7},
  year    = {1875}
}