@article{Hessel2017,
  author    = {Werner Hessel},
  title     = {Orchideen in Holzwickede (Kreis Unna, Nordrhein-Westfalen)},
  journal   = {Jahrbuch des Bochumer Botanischen Vereins},
  volume    = {8},
  pages     = {72 -- 87},
  year      = {2017},
}