@book { DieneueErnhrungbeiKrebs,
    title = "Die neue Ernährung bei Krebs",
    author = "Oliver {Kohl} and Carola {Dehmel}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403598"
}