1. Aamodt, A. (1993). A Case-Based answer to Some Problems of Knowledge-Based Systems. In E. Sandewall & C.G Jansson (Eds.) Proceedings of the Scandinavian Conference on Artificial Intelligence (pp 168-182). IOS Press. Retrieved from http://www.idi.ntnu.no/~agnar/publications/scai-93.pdf
2. From data to wisdom.;R. L.Ackoff;Journal of Applied Systems Analysis,1989
3. Web 2.0: A new wave of innovation for teaching and learning?;B.Alexander;EDUCAUSE Review,2006