@book { DerVergnglicheProjektStellarBuch7LitRPGSerie,
    title = "Der Vergängliche (Projekt Stellar Buch 7): LitRPG-Serie",
    author = "Roman {Prokofiev}",
    year = "2023",
    publisher = "Magic Dome Books",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1418311"
}