@book { DasgroeKetogeneErnhrungBuch,
    title = "Das große Ketogene Ernährung Buch",
    author = "Stefanie {Hoffmann}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1478583"
}