@book { Mannwirdlter,
    title = "Mann wird älter",
    subtitle = "Beobachtungen am Abgrund",
    author = "Manfred {Suttinger}",
    year = "2025",
    publisher = "Omnino Verlag",
    address = "Berlin, Deutschland",
    url = "https://shop.omnino-verlag.de/document/1569455"
}