@book { DasPlanetenNetz11EinuraltesRaumschiff,
    title = "​Das Planeten-Netz 11: Ein uraltes Raumschiff",
    author = "Wilfried A. {Hary}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/538931"
}