@book { RaumschiffPrometVonSternzuStern20DasAttentat,
    title = "Raumschiff Promet - Von Stern zu Stern 20: Das Attentat",
    author = "Achim {Mehnert}",
    year = "2020",
    publisher = "Blitz-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1363228"
}