@book{BarceloBeetz1998,
  author    = {Barcel{\´o}, Pedro and Beetz, Petra},
  title     = {Expedition Geschichte : Regelschule Th{\"u}ringen ; Klasse 5 ; Bd. 1 Von der Urzeit bis zur Zeit der Griechen [Hauptband]},
  volume    = {1, Hauptbd. = 5. Kl},
  editor    = {Klose, Dagmar and Barcel{\´o}, Pedro},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-03401-4},
  pages     = {106 S.},
  year      = {1998},
  language  = {de}
}
@book{BarceloBeetzClauss1997,
  author    = {Barcel{\´o}, Pedro and Beetz, Petra and Clauss, Manfred},
  title     = {Expedition Geschichte : F{\"o}rderstufe Sachsen-Anhalt ; Klassen 5/6 ; Bd. 1 Von der Urzeit bis zum Ende des Mittelalters [Hauptband]},
  volume    = {1 = Kl. 5 und 6},
  editor    = {Klose, Dagmar and Barcel{\´o}, Pedro},
  publisher = {Diesterweg},
  address   = {Frankfurt am Main},
  isbn      = {3-425-03385-9},
  pages     = {244 S.},
  year      = {1997},
  language  = {de}
}
@book{Barcelo1994,
  author    = {Barcel{\´o}, Pedro},
  title     = {Grundkurs Geschichte : Bd. 1 Altertum},
  series = {Beltz-Athen{\"a}um-Studienb{\"u}cher : Geschichte},
  journal   = {Beltz-Athen{\"a}um-Studienb{\"u}cher : Geschichte},
  publisher = {Beltz-Athen{\"a}um},
  address   = {Frankfurt am Main},
  pages     = {404 S.},
  year      = {1994},
  language  = {de}
}
@book{Barcelo2000,
  author    = {Barcel{\´o}, Pedro},
  title     = {An{\´i}bal de Cartago : un proyecto alternativo a la formaci{\´o}n del Imperio Romano},
  series = {El libro de bolsillo : Historia},
  volume    = {4187},
  journal   = {El libro de bolsillo : Historia},
  publisher = {Alianza Ed.},
  address   = {Madrid},
  pages     = {242 S.},
  year      = {2000},
  language  = {es}
}