@book { TheArtofHosting,
    title = "The Art of Hosting",
    author = "Ilse M. {Pogatschnigg} and Mischa Oliver {Altmann}",
    year = "2021",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221348"
}