@book { WissensundInnovationsmanagementinKMU,
    title = "Wissens- und Innovationsmanagement in KMU",
    author = "Ralf {Zimmermann}",
    year = "2005",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638433761",
    url = "https://www.hausarbeiten.de/document/46110"
}