@book { IndividualisierungderPeriodenarbeitszeit,
    title = "Individualisierung der Periodenarbeitszeit",
    author = "Lars {Renner}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832436926",
    url = "https://m.diplom.de/document/219377"
}