A. Rose, B. Shneiderman, и C. Plaisant. ACM Proc. of DIS 95, Symposium on Designing Interactive Systems: Processes, Practices, Methods & Techniques, стр. 115-122. (августа 1995)
R. Torres, S. Mcnee, M. Abel, J. Konstan, и J. Riedl. International Conference on Digital Libraries,Proceedings of the 4th ACM/IEEE-CS joint conference on Digital libraries, (2004)