@article{HornBennert2001,
  author    = {Karsten Horn and H. Wilfried Bennert},
  title     = {Diphasiastrum oellgaardii, eine neue Flachb{\"a}rlapp-Art f{\"u}r die Flora Hessens},
  journal   = {Botanik und Naturschutz in Hessen},
  volume    = {13},
  pages     = {33 -- 37},
  year      = {2001},
}