@phdthesis{Lehmann2009,
  author    = {Lehmann, Jens-Torsten},
  title     = {Der Begriff der Sittenwidrigkeit im Gewerberecht},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {978-3-8322-8633-0},
  pages     = {335 S.},
  year      = {2009},
  language  = {de}
}