- CSB - MetaPress - Google - Bing - Yahoo
 | 2009 | |
|---|---|---|
| 1 |      | Henk J. Pol, Egbert G. Harskamp, Cor J. M. Suhre, Martin J. Goedhart: How indirect supportive digital help during and after solving physics problems can improve problem-solving abilities. Computers & Education 53(1): 34-50 (2009) |
| 1 | Egbert G. Harskamp | [1] |
| 2 | Henk J. Pol | [1] |
| 3 | Cor J. M. Suhre | [1] |