@book { LesacredePpinleBrefetlecouronnementdeCharlemagne, title = "Le sacre de Pépin le Bref et le couronnement de Charlemagne", author = "Daniel {Wimmer} and Romina {Matthes}", year = "2007", publisher = "GRIN Verlag", address = "München, Germany", doi = "10.3239/9783638880244", url = "https://www.hausarbeiten.de/document/81550" }