@book { HaribomachtKinderfroh,
    title = "Haribo macht Kinder froh?",
    author = "Michaela {Doll}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836630825",
    url = "https://m.diplom.de/document/226863"
}