@book { GutlebenmitdemDefibrillator,
    title = "Gut leben mit dem Defibrillator",
    author = "Birgit {Schlepütz} and  {Herz in Takt Defi-Liga e. V}",
    year = "2021",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/993661"
}