@book { wwwSchmerzBeschwerdende,
    title = "www.Schmerz-Beschwerden.de",
    author = "Astrid {Winkler}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832457020",
    url = "https://m.diplom.de/document/221174"
}