E. Chi, und T. Mytkowicz. HT '08: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, Seite 81--88. New York, NY, USA, ACM, (2008)
C. Marlow, M. Naaman, D. Boyd, und M. Davis. HYPERTEXT '06: Proceedings of the seventeenth conference on Hypertext and hypermedia, Seite 31--40. New York, NY, USA, ACM, (2006)