@book { DerMnchunddieWikingerDasBuchHaithabu,
    title = "Der Mönch und die Wikinger - Das Buch Haithabu",
    author = "Claus-Peter {Lieckfeld}",
    year = "2024",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1459096"
}