@book { FderaleVielfaltinDeutschlandimWiderstreitzumBrgerinteresse,
    title = "Föderale Vielfalt in Deutschland im Widerstreit zum Bürgerinteresse",
    author = "Gerhard {Kappius}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01666-6",
    url = "https://www.peterlang.com/document/1045980"
}