@book { ErnhrungbeiCOPD,
    title = "Ernährung bei COPD",
    author = "Agnes {Budnowski} and Flora {Koller} and Martina {Kreuter - Müller} and Ralf H. {Zwick}",
    year = "2019",
    publisher = "facultas / maudrich",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/520719"
}