@inproceedings{Nippel2006,
  author    = {Wilfried Nippel},
  title     = {Antike und moderne Freiheit},
  pages     = {49 -- 68},
  url       = {http://edoc.bbaw.de/oa/series/reEvdZuUlS59U/PDF/24NI2Z1DTIS5A.pdf},
  year      = {2006},
}