@book{Lettl2008,
  author    = {Lettl, Tobias},
  title     = {F{\"a}lle zum Gesellschaftsrecht},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {978-3-406-56401-7},
  pages     = {206 S.},
  year      = {2008},
  language  = {de}
}
@book{Lettl2008,
  author    = {Lettl, Tobias},
  title     = {Urheberrecht},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {978-3-406-56777-3},
  pages     = {392 S.},
  year      = {2008},
  language  = {de}
}