@book { DasPlanetenNetz9GeheimprojektPlanetDelta,
    title = "Das Planeten-Netz 9: Geheimprojekt Planet Delta",
    author = "Wilfried A. {Hary}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/535227"
}