J. Kim, P. Guo, C. Cai, S. Li, K. Gajos, and R. Miller. Proceedings of the 27th Annual ACM Symposium on User Interface Software and Technology, page 563--572. New York, NY, USA, ACM, (2014)
R. Mertens, R. Farzan, and P. Brusilovsky. HYPERTEXT '06: Proceedings of the seventeenth conference on Hypertext and hypermedia, page 41--44. New York, NY, USA, ACM, (2006)
R. Mertens, R. Farzan, and P. Brusilovsky. Proceedings of the seventeenth conference on Hypertext and hypermedia, page 41--44. New York, NY, USA, ACM, (2006)