| 2007 | ||
|---|---|---|
| 1 | Ulrike Cress, B. Barquero, Stephan Schwan, Friedrich W. Hesse: Improving quality and quantity of contributions: Two models for promoting knowledge exchange with shared databases. Computers & Education 49(2): 423-440 (2007) | |
| 1 | Ulrike Cress | [1] |
| 2 | Friedrich W. Hesse | [1] |
| 3 | Stephan Schwan | [1] |