Anders L. Madsen Dennis Nilsson Solving Influence Diagrams using HUGIN, Shafer-Shenoy and Lazy Propagation. 337-345 2001 conf/uai/2001 UAI http://uai.sis.pitt.edu/displayArticleDetails.jsp?mmnu=1&smnu=2&article_id=117&proceeding_id=17 db/conf/uai/uai2001.html#MadsenN01