@book { HansMagnusEnzensberger,
    title = "Hans Magnus Enzensberger",
    subtitle = "Writing, Media, Democracy",
    author = " {Anonym}",
    year = "2007",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    url = "https://www.peterlang.com/document/1102340"
}