@book { GewinnthesaurierungbeiPersonengesellschaften,
    title = "Gewinnthesaurierung bei Personengesellschaften",
    author = "Georg {Müller}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836638852",
    url = "https://m.diplom.de/document/227397"
}