@book { DasLeuchtenderSavanne,
    title = "Das Leuchten der Savanne",
    author = "Rolf {Ackermann}",
    year = "2018",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783943835304",
    url = "https://m.dotbooks.de/document/196007"
}