K. Bischoff, C. Firan, W. Nejdl, and R. Paiu. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge management, page 193--202. New York, NY, USA, ACM, (2008)
P. Pirolli. CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, page 605--614. New York, NY, USA, ACM, (2009)
A. Plangprasopchok, and K. Lerman. WWW '09: Proceedings of the 18th international conference on World wide web, page 781--790. New York, NY, USA, ACM, (2009)