@inproceedings{TUC-CSCW/PHLV05, author = "N. Pinkwart and A. Harrer and S. Lohmann and S. Vetter", title = "Integrating Portal Based Support Tools to Foster Learning Communities in University Courses", year = 2005, booktitle = "Proceedings of the 4th International Conference on Web Based Education (WBE)", publisher = "ACTA Press" }