- CSB - MetaPress - Google - Bing - Yahoo
 | 2004 | |
|---|---|---|
| 1 |      | Gabriel Moy, Nathan Jones, Curt Harkless, Randall Potter: Distortion Estimation Techniques in Solving Visual CAPTCHAs. CVPR (2) 2004: 23-28 |
| 1 | Nathan Jones | [1] |
| 2 | Gabriel Moy | [1] |
| 3 | Randall Potter | [1] |