@book { StrategicDesignofB2BeMarketplaceBusinessModels,
    title = "Strategic Design of B2B e-Marketplace Business Models",
    author = "Birgit {Hartmann}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832432331",
    url = "https://m.diplom.de/document/218923"
}