@book { RaumschiffRubikon42DieMachtderFraktalen,
    title = "Raumschiff Rubikon 42 Die Macht der Fraktalen",
    author = "Manfred {Weinland}",
    year = "2018",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/453198"
}