@book { DasPlanetenNetz19RypdahlsneueWelt,
    title = "Das Planeten-Netz 19: Rypdahls neue Welt",
    author = "Wilfried A. {Hary} and Alfred {Bekker}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/594971"
}