@book { DieKorrekturvonSteuerbescheiden,
    title = "Die Korrektur von Steuerbescheiden",
    author = "Matthias {Becker}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836627405",
    url = "https://m.diplom.de/document/226652"
}