@article{Duchac2009,
  author    = {V{\´a}clav Duch{\´a}c},
  title     = {Einige Funde von Afterskorpionen (Pseudoscorpiones) auf Helgoland},
  journal   = {Arachnologische Mitteilungen},
  number    = {27/28},
  pages     = {74 -- 77},
  year      = {2009},
}