@book { PanpepatoimFarbspielderOpale,
    title = "Panpepato im Farbspiel der Opale",
    author = "Ulrike Ina {Schmitz}",
    year = "2016",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/996668"
}