@book { NaturheilkundebeiKrebs,
    title = "Naturheilkunde bei Krebs",
    author = "Anne {Wanitschek} and Sebastian {Vigl}",
    year = "2017",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403119"
}