- CSB - MetaPress - Google - Bing - Yahoo
 | 2004 | |
|---|---|---|
| 1 |      | Andres Agudelo, Lina Escobar, Juliana Restrepo, Andres Quiroz, Helmuth Trefftz: A Collaborative Tool for Synchronous Distance Education. CATE 2004: 438-443 |
| 1 | Andres Agudelo | [1] |
| 2 | Andres Quiroz | [1] |
| 3 | Juliana Restrepo | [1] |
| 4 | Helmuth Trefftz | [1] |