@book { RatingagentureninderKrise,
    title = "Ratingagenturen in der Krise",
    author = "Patrick {Andrieu}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-00261-4",
    url = "https://www.peterlang.com/document/1054327"
}