@incollection{TUW-136986, author = {Schatten, Alexander and Schedenig, Marian and Tjoa, A Min}, title = {Refactoring the Application Infrastructure for Building Open Distance --Learning Websites -- Lessons Learned in a Case Study in a German Literature and Language e-Learning Application}, booktitle = {Web-based Learning: Men and Machines}, year = {2002}, pages = {160--168}, publisher = {World Scientific}, isbn = {981-238-126-0} }