@article{BuchZimmermann2014,
  author    = {Corinne Buch and Dieter Gregor Zimmermann},
  title     = {Exkursion: Haan-Gruiten, NSG Grube 7},
  journal   = {Jahrbuch des Bochumer Botanischen Vereins},
  volume    = {5},
  pages     = {89 -- 92},
  year      = {2014},
}