Sunil Choenni Henk Ernst Blok Erik Leertouwer Handling Uncertainty and Ignorance in Databases: A Rule to Combine Dependent Data. 310-324 2006 conf/dasfaa/2006 DASFAA http://dx.doi.org/10.1007/11733836_23 db/conf/dasfaa/dasfaa2006.html#ChoenniBL06