1. Benyon, D., Höök, K.: Navigation in Information Spaces: supporting the individual. In: Howard, S., Hammond, J., Lindgaard, G. (eds.) Human-Computer Interaction: INTERACT1997, pp. 39–46. Chapman and Hall, London (1997)
2. Borgman, C.L.: Why are Online Catalogs Still Hard to Use. Journal of the American Society for Information Science 47(7), 493–503 (1996)
3. Chen, H., Houston, A., Sewell, R., Schatz, B.: Internet browsing and searching: user evaluations of category map and concept space techniques. Journal of American Society of Information Science 49, 582–603 (1998)
4. Chen, S.Y., Ford, N.J.: Modelling User Navigation Behaviours in a Hypermedia-Based Learning System: An Individual Differences Approach. Int. J. of Knowledge Organization 25, 67–78 (1998)
5. Chuang, Y-R.: Teaching in a Multimedia Computer Environment: A study of effects of learning style, gender, and math achievement. Interactive Multimedia Electronic Journal of Computer-Enhanced Learning, 1, 1, (1999),
http://imej.wfu.edu/articles/1999/1/10/