B. Markines, C. Cattuto, and F. Menczer. Proceedings of the 5th International Workshop on Adversarial Information Retrieval on the Web, page 41--48. New York, NY, USA, ACM, (2009)
B. Krause, C. Schmitz, A. Hotho, and G. Stumme. Proceedings of the 4th international workshop on Adversarial information retrieval on the web, page 61--68. New York, NY, USA, ACM, (2008)