@book { EinDokumentderWahrheit,
    title = "Ein Dokument der Wahrheit?",
    author = "Marcus {Kaiser }",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640982424",
    url = "https://www.hausarbeiten.de/document/176818"
}