1. An introduction to Bayesian networks;Jensen,1996
2. Kerka, S. (1996). Distance learning, the internet and the world wide web, ERIC digests: ERIC document reproduction service no. ED395214
3. Kschischang, F., Frey, B., & Loeliger, H. (2001). Factor graphs and the sum product algorithm. IEEE Transactions on Information Theory, February issue
4. Local computations with probabilities on graphical structures and their applications to expert systems;Lauritzen,1990
5. Computer literacy and applications via distance e-learning;Lupo;Computers & Education,2001