@book { NationaleSteuervergnstigungshoheitundEuroparecht,
    title = "Nationale Steuervergünstigungshoheit und Europarecht",
    author = "Andrea {Kämper}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106906"
}