@book { UrsachenvonWhrungskrisen,
    title = "Ursachen von Währungskrisen",
    author = "Marija {Kunzmann}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832483104",
    url = "https://m.diplom.de/document/223505"
}