Douglas Burdick Prasad Deshpande T. S. Jayram Raghu Ramakrishnan Shivakumar Vaithyanathan OLAP Over Uncertain and Imprecise Data. 970-981 2005 conf/vldb/2005 VLDB http://www.vldb2005.org/program/paper/fri/p970-burdick.pdf db/conf/vldb/vldb2005.html#BurdickDJRV05