I. Podgorny, M. Cannon, and T. Goodyear. Proceedings of the 18th ACM Conference Companion on Computer Supported Cooperative Work and Social Computing (CSCW '15 Companion), Vancouver, Canada, page 143--146. New York, ACM, (2015)
B. Hecht, and D. Gergle. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '10), Atlanta, GA, USA, page 291--300. New York, ACM, (2010)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. The Semantic Web -- ISWC 2008: 7th International Semantic Web Conference, Karlsruhe, Germany, volume 5318 of Lecture Notes in Computer Science, Springer, Berlin, (2008)