@book { NeueAlternativendesLnderFinanzausgleichs,
    title = "Neue Alternativen des Länder-Finanzausgleichs",
    author = "Wolfram {Elsner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093290"
}