@article{MeinertOttichZizka2009,
  author    = {Sandra Meinert and Indra Ottich and Georg Zizka},
  title     = {Anthropochore Aster-Arten (Asteraceae) in Frankfurt am Main},
  journal   = {Botanik und Naturschutz in Hessen},
  volume    = {22},
  pages     = {91 -- 106},
  year      = {2009},
}