1. book "Bayesian AI": http://www.csse.monash.edu.au/bai/book/about.php
2. 3hour advanced videotutorial: http://videolectures.net/kdd07_neapolitan_lbn/
3. finally Google scholar: http://scholar.google.fi/scholar?hl=en&q=bayesian+networ...
ps: Nice article: "Bayesian Networks without tears" by Eugene Charniak: http://www.aaai.org/ojs/index.php/aimagazine/article/view/91...