Paper  bibtex   

@collection{hegiIllustrierteFloraMitteleuropa1906,
  title = {Illustrierte {{Flora}} von {{Mitteleuropa}}},
  editor = {Hegi, Gustav},
  date = {1906},
  volume = {1},
  publisher = {{Lehmann}},
  location = {{München}},
  url = {http://nbn-resolving.de/urn:nbn:de:hbz:061:2-21294-p0005-1},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13778778,central-europe,forest-resources,germany,species-description}
}