S. Nobarany, M. Haraty, and D. Cosley. Proceedings of the AAAI Spring Symposium on Social Information Processing (AAAI-SIP-08), Menlo Park, California, AAAI, AAAI, (2008)
M. Saleem. (2006)http://themulife.com/?p=145. Accessed 11-Oct-2008 from its cached copy at http://www.google.com/search?q=cache:Uj2wkQrBeCAJ:www.themulife.com/wp-trackback.php%3Fp%3D145&strip=1.