@book { KrperlichesTrainingmitCOPDPatienten,
    title = "Körperliches Training mit COPD-Patienten",
    author = "Kerstin {Bastian}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832462109",
    url = "https://m.diplom.de/document/221660"
}