@book { Mobbing,
    title = "Mobbing",
    subtitle = "Eine Konzeption zur Prävention und Reduzierung",
    author = "Katinka {Schmid}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832472740",
    url = "https://m.diplom.de/document/222573"
}