@book { DasGeheimnisLiteraturQuickie,
    title = "Das Geheimnis - Literatur-Quickie",
    subtitle = "Band 52",
    author = "Rainer Maria {Rilke}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955202309",
    url = "https://www.dotbooks.de/document/212951"
}