@book { ErnhrungbeiDiabetes,
    title = "Ernährung bei Diabetes",
    author = "Bernhard {Ludvik} and Eva {Krainz}",
    year = "2015",
    publisher = "facultas / maudrich",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/932866"
}