@book { rztlicheWerbungimeuropischenKontext,
    title = "Ärztliche Werbung im europäischen Kontext",
    author = "Christoph {Kretschmer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101762"
}