@book { JugendlicheinffentlichenRumenderStadt,
    title = "Jugendliche in öffentlichen Räumen der Stadt",
    author = "Chrystina {Kunze}",
    year = "2005",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638372558",
    url = "https://www.hausarbeiten.de/document/38071"
}