@book { StressamArbeitsplatz,
    title = "Stress am Arbeitsplatz",
    author = "Christina {Müller}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638209755",
    url = "https://www.hausarbeiten.de/document/16017"
}