| |
| 2008 | ||
|---|---|---|
| 2 | EE | Birgitta Kopp, Heinz Mandl: Collaborative Online Learning: A Heterogeneous Phenomenon. Knowledge Construction in E-learning Context 2008 |
| 1 | EE | Bernhard Ertl, Birgitta Kopp, Heinz Mandl: Supporting Learners Collaborative Knowledge Construction by External Representations. Knowledge Construction in E-learning Context 2008 |
| 1 | Bernhard Ertl | [1] |
| 2 | Heinz Mandl | [1] [2] |