@book { ZumVertrauenrulanddeutscherAussiedlerindieDuisburgerPolizei,
    title = "Zum Vertrauen rußlanddeutscher Aussiedler in die Duisburger Polizei",
    author = "Steffen {Zdun}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832487508",
    url = "https://m.diplom.de/document/223936"
}