@book { Buntbuntbuntistalleswasichdenke,
    title = "Bunt, bunt, bunt ist alles, was ich denke",
    author = "Ursula {Oppolzer}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403564"
}