a first validation, Proceedings of the 2nd international conference on Persuasive technology, April 26-27, 2007, Palo Alto, CA, USA
Sabine Niebuhr , Daniel Kerkow, Captivating patterns: a first validation, Proceedings of the 2nd international conference on Persuasive technology, April 26-27, 2007, Palo Alto, CA, USA
2007