@book { RooftopChallengeBiszumHorizont,
    title = "Rooftop-Challenge - Bis zum Horizont",
    author = "H.C. {Hope}",
    year = "2023",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1314651"
}