L. von Ahn, M. Kedia, und M. Blum. CHI '06: Proceedings of the SIGCHI conference on Human Factors in computing systems, Seite 75--78. New York, NY, USA, ACM Press, (2006)
M. Storey, L. Cheng, I. Bull, und P. Rigby. CHI '06: CHI '06 extended abstracts on Human factors in computing systems, Seite 1367--1372. New York, NY, USA, ACM Press, (2006)
D. Millard, und M. Ross. HYPERTEXT '06: Proceedings of the seventeenth conference on Hypertext and hypermedia, Seite 27--30. New York, NY, USA, ACM Press, (2006)
S. Niwa, T. Doi, und S. Honiden. ITNG '06: Proceedings of the Third International Conference on Information Technology: New Generations (ITNG'06), Seite 388--393. Washington, DC, USA, IEEE Computer Society, (2006)
H. Kwak, C. Lee, H. Park, und S. Moon. WWW '10: Proceedings of the 19th international conference on World wide web, Seite 591--600. New York, NY, USA, ACM, (2010)
H. Kwak, C. Lee, H. Park, und S. Moon. WWW '10: Proceedings of the 19th international conference on World wide web, Seite 591--600. New York, NY, USA, ACM, (2010)
M. Zhou, und A. Mockus. Proceedings of the 2012 International Conference on Software Engineering, Seite 518--528. Piscataway, NJ, USA, IEEE Press, (2012)
S. Wu, J. Hofman, W. Mason, und D. Watts. Proceedings of the 20th international conference on World wide web, Seite 705--714. New York, NY, USA, ACM, (2011)
M. Ames, und M. Naaman. CHI '07: Proceedings of the SIGCHI conference on Human factors in computing systems, Seite 971--980. New York, NY, USA, ACM Press, (2007)