@inbook { kerres_konzeptio, title = {Didaktische Konzeption von CSCL-Arrangements}, booktitle = {CSCL-Kompendium}, year = {2004}, publisher = {Oldenbourg}, organization = {Oldenbourg}, address = {M{\"u}nchen}, author = {Michael Kerres and Nattland, A. and I N{\"u}bel}, editor = {Haake, J. and Schwabe, G. and Martin Wessner} }