@book { BeitragvonSocialSoftwarefrdasWissensmanagementinUnternehmen,
    title = "Beitrag von Social Software für das Wissensmanagement in Unternehmen",
    author = "Kai {Kunkel}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842821590",
    url = "https://m.diplom.de/document/228300"
}