@article{Lubienski2014,
  author    = {Marcus Lubienski},
  title     = {Exkursion: Hagen, Farnexkursion},
  journal   = {Jahrbuch des Bochumer Botanischen Vereins},
  volume    = {5},
  pages     = {93 -- 97},
  year      = {2014},
}