@book { DieFigurdesFinanzplankredits,
    title = "Die Figur des Finanzplankredits",
    author = "Alexander {Nagel}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04205-4",
    url = "https://www.peterlang.com/document/1048357"
}