@book { GesundeZellenmehrEnergie,
    title = "Gesunde Zellen – mehr Energie",
    subtitle = "Dein Weg aus der Mitochondriopathie. Mehr Gesundheit in 6 Schritten",
    author = "Silke {Bierkämper}",
    year = "2024",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1507288"
}