@book { AUGENFITNESS,
    title = "AUGENFITNESS",
    subtitle = "Strategien für gutes Sehen bis ins Alter",
    author = "R. C. {Jann}",
    year = "2024",
    publisher = "Omnino Verlag",
    address = "Berlin, Deutschland",
    url = "https://shop.omnino-verlag.de/document/1448786"
}