@inbook { 6027, title = {Implikationen von Web 2.0 f{\"u}r das E-Learning}, booktitle = {Web 2.0 - Schlagwort oder Megatrend? Fakten, Analysen, Prognosen}, year = {2007}, publisher = {Kop{\"a}d}, organization = {Kop{\"a}d}, edition = {6}, address = {M{\"u}nchen}, url = {http://www.kopaed.de/kopaedshop/index.php?PRODUCT_ID=529}, author = {Michael Kerres and Nattland, Axel and Gehrke, Gernot} }