@book { DerExpressionismusAnnherunganeineEpoche,
    title = "Der Expressionismus - Annäherung an eine Epoche",
    author = "Verena {Ronge}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/218394"
}