@book { MobbinganweiterfhrendenSchulen,
    title = "Mobbing an weiterführenden Schulen",
    author = "Katja {Wasilewski}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842810594",
    url = "https://m.diplom.de/document/228343"
}