Weiru Liu Xin Hong Kenneth Adamson Computational-Workload Based Binarization and Partition of Qualitative Markov Trees for Belief Combination. 306-318 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2711&spage=306 2003 conf/ecsqaru/2003 ECSQARU db/conf/ecsqaru/ecsqaru2003.html#LiuHA03