- CSB - MetaPress - Google - Bing - Yahoo
 | 2009 | |
|---|---|---|
| 1 |      | Gustavo Santos, Iris Howley, Brad Copenhaver, Vincent Aleven: Integrating Conceptual and Procedural Knowledge for Middle-school Math. AIED 2009: 787-788 |
| 1 | Vincent Aleven | [1] |
| 2 | Iris Howley | [1] |
| 3 | Gustavo Santos | [1] |