@book { ZurIdeedesVirtuellenUnternehmens,
    title = "Zur Idee des Virtuellen Unternehmens",
    author = "Michael {Scholz}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832436520",
    url = "https://m.diplom.de/document/219302"
}