@book { SchuldenmanagementderffentlichenHand,
    title = "Schuldenmanagement der öffentlichen Hand",
    author = "Felix {Schafroth}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836601634",
    url = "https://m.diplom.de/document/228781"
}