@book { ErnhrungbeiAdipositasOperationen,
    title = "Ernährung bei Adipositas-Operationen",
    author = "Birgit {Lötsch} and Eva {Russold} and Bernhard {Ludvik}",
    year = "2022",
    publisher = "facultas / maudrich",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/1009667"
}