@book { OffeneSystemeundStandardisierungimInternet,
    title = "Offene Systeme und Standardisierung im Internet",
    author = "Martin {Schädler}",
    year = "2005",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638337151",
    url = "https://www.hausarbeiten.de/document/33178"
}