@book { StadtlebenundNationalitt,
    title = "Stadtleben und Nationalität",
    author = "Markus {Krzoska} and Isabel {Röskau-Rydel}",
    year = "2006",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1102252"
}