@article{HroudovaGregorZakravsky2009,
  author    = {Zdenka Hroudov{\´a} and Thomas Gregor and Petr Z{\´a}kravsk{\´y}},
  title     = {Die Verbreitung von Bolboschoenus-Arten in Deutschland},
  journal   = {Kochia},
  volume    = {4},
  pages     = {1 -- 22},
  year      = {2009},
}