@article{BennertNeikesGausmannetal.2013,
  author    = {H. Wilfried Bennert and Norbert Neikes and Peter Gausmann and Wolfgang J{\"a}ger and Marcus Lubienski and Ronald Viane},
  title     = {Erstnachweis von Dryopteris affinis s. str. (Dryopteridaceae, Pteridophyta) f{\"u}r Nordrhein-Westfalen},
  journal   = {Kochia},
  volume    = {7},
  pages     = {87 -- 107},
  year      = {2013},
}