@book { Nhrstoffreich,
    title = "Nährstoffreich",
    subtitle = "Ernährung in Krankenhaus und Pflege",
    author = "Claudia {Hofmann} and Flora {Koller} and Martina {Kreuter}",
    year = "2016",
    publisher = "facultas",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/418339"
}