@book { PolitischekonomiedesFderalismus,
    title = "Politische Ökonomie des Föderalismus",
    author = "Hans {Pitlik}",
    year = "1997",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13995",
    url = "https://www.peterlang.com/document/1068531"
}