@book { WeihnachtenDasbesinnlicheFest,
    title = "Weihnachten - Das besinnliche Fest",
    author = "Caroline  {Bayer}",
    year = "2012",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955200398",
    url = "https://m.dotbooks.de/document/201863"
}