@inbook { kerres_gestaltun, title = {Gestaltung der Betreuung beim E-Learning}, booktitle = {E-Learning in Hochschulen und Bildungszentren}, year = {2004}, pages = {335{\textendash}350}, publisher = {Oldenbourg}, organization = {Oldenbourg}, address = {M{\"u}nchen}, author = {Michael Kerres and I N{\"u}bel and Grabe, Wanda}, editor = {Euler, Dieter. and Seufert, Sabine} }