@book { GewaltinderStadt,
    title = "Gewalt in der Stadt",
    subtitle = "Lösungsansätze zur kommunalen Kriminalitätspropyhlaxe",
    author = "Sabine {Kaldun}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832426590",
    url = "https://m.diplom.de/document/217887"
}