| |
| 2005 | ||
|---|---|---|
| 3 | Dirk Vriens: Information and Communication Technology Tools for Competitive Intelligence. Encyclopedia of Information Science and Technology (III) 2005: 1458-1463 | |
| 2 | Dirk Vriens: Supporting the Evaluation of Intelligent Sources. Encyclopedia of Information Science and Technology (V) 2005: 2690-2695 | |
| 1993 | ||
| 1 | Dirk Vriens: Problem-Setting Support. Decision Support in Public Administration 1993: 29-41 | |