@book { Abgeltungsteuer,
    title = "Abgeltungsteuer",
    author = "Bastian {Borndörfer}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836643344",
    url = "https://m.diplom.de/document/227635"
}