D. Chau, A. Kittur, J. Hong, and C. Faloutsos. Proceedings of the 2011 annual conference on Human factors in computing systems, CHI 2011, page 167-176. ACM Press, (2011)
S. Baluja, D. Ravichandran, and D. Sivakumar. Proceeding of the International Conference on Knowledge Discovery and Information Retrieval (KDIR 2009), INSTICC, (6-8 oct 2009)