@book { DieIntegrationvonELearningundWissensmanagement,
    title = "Die Integration von E-Learning und Wissensmanagement",
    author = "Nadine {Treichel}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832479749",
    url = "https://m.diplom.de/document/223000"
}