Nir Friedman Joseph Y. Halpern Modeling Belief in Dynamic Systems, Part II: Revision and Update. 117-167 1999 10 J. Artif. Intell. Res. (JAIR) http://www.cs.washington.edu/research/jair/abstracts/friedman99a.html db/journals/jair/jair10.html#FriedmanH99