@book { AustraliensungleicheSchwestern,
    title = "Australiens (un)gleiche Schwestern",
    author = "Barbara {Mittel}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832487003",
    url = "https://m.diplom.de/document/223677"
}