@book { KomponentenbibliothekenfrVideokonferenzen,
    title = "Komponentenbibliotheken für Videokonferenzen",
    author = "Patrick {Hartmann}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Germany",
    doi = "10.3239/9783832406868",
    url = "https://m.diplom.de/document/216614"
}