@book { TechnischesWissenausPatenten,
    title = "Technisches Wissen aus Patenten",
    author = "Niels {Behrmann}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832409708",
    url = "https://m.diplom.de/document/216868"
}