@book { DieBedeutungdesECommercefrdasIndustriegtermarketing,
    title = "Die Bedeutung des E-Commerce für das Industriegütermarketing",
    author = "Michael {Fritz}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832423353",
    url = "https://m.diplom.de/document/218149"
}