@book { FlexibilisierungderArbeitszeit,
    title = "Flexibilisierung der Arbeitszeit",
    author = "Silke {Handl} and Matthias {Discher}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638186063",
    url = "https://www.hausarbeiten.de/document/12803"
}