@book{Barcelo2007,
  author    = {Barcel{\´o}, Pedro},
  title     = {Alexander der Große},
  publisher = {Primus-Verl.},
  address   = {Darmstadt},
  isbn      = {978-3-89678-610-4},
  pages     = {272 S.},
  year      = {2007},
  language  = {de}
}
@book{Barcelo2007,
  author    = {Barcel{\´o}, Pedro},
  title     = {Hannibal},
  edition   = {3. Aufl.},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {978-3-406-43292-7},
  pages     = {122},
  year      = {2007},
  language  = {de}
}