@book { NeueWertschpfungsarchitekturen,
    title = "Neue Wertschöpfungsarchitekturen",
    author = "Ulrich {Schroers}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832441807",
    url = "https://m.diplom.de/document/219801"
}