@book { DieBudgetkompetenzeninderEuropischenUnion,
    title = "Die Budgetkompetenzen in der Europäischen Union",
    subtitle = "Eine integrationstheoretische Analyse",
    author = "Stefan {Ronnecker}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107156"
}