@book { DiewirklichwahreWeihnacht,
    title = "Die wirklich wahre Weihnacht",
    author = "Tilman {Röhrig}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955204365",
    url = "https://m.dotbooks.de/document/262399"
}