@book { SeelenSpiegelBilder,
    title = "Seelen Spiegel Bilder",
    author = "Ursula {Schmid}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403581"
}