1. Brooke, J.: SUS: A quick and dirty usability scale. In: Jordan, P., Thomas, B., Weerdmeester, B., McClelland, A. (eds.) Usability Evaluation in Industry, pp. 189–194. Taylor and Francis, London (1996)
2. Ferré, S.: Camelis: a logical information system to organize and browse a collection of documents. Int. J. General Systems 38(4) (2009)
3. Ferré, S., Hermann, A., Ducassé, M.: Semantic faceted search: Safe and expressive navigation in RDF graphs. Research report, IRISA (2011),
http://hal.inria.fr/inria-00410959/PDF/PI-1964.pdf
4. Lecture Notes in Artificial Intelligence;S. Ferré,2000
5. Hearst, M., Elliott, A., English, J., Sinha, R., Swearingen, K., Yee, K.P.: Finding the flow in web site search. Communications of the ACM 45(9), 42–49 (2002)