Daniel Bryce Subbarao Kambhampati Cost Sensitive Reachability Heuristics for Handling State Uncertainty. 60-68 2005 conf/uai/2005 UAI http://uai.sis.pitt.edu/displayArticleDetails.jsp?mmnu=1&smnu=2&article_id=1224&proceeding_id=21 db/conf/uai/uai2005.html#BryceK05