@book { GeldalsAnreizinstrument,
    title = "Geld als Anreizinstrument",
    author = "Christian {Sander}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832462765",
    url = "https://m.diplom.de/document/221496"
}