@book { KnowledgeManagementinderNewEconomy,
    title = "Knowledge Management in der New Economy",
    subtitle = "Problem oder Chance?",
    author = "Ralf {Winter}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832469238",
    url = "https://m.diplom.de/document/222260"
}