Trio: A System for Data, Uncertainty, and Lineage. - Parag Agrawal; Omar Benjelloun; Anish Das Sarma; Chris Hayworth; Shubha U. Nabar; Tomoe Sugihara; Jennifer Widom (VLDB, 2006)

Trio-One: Layering Uncertainty and Lineage on a Conventional DBMS (Demo). - Michi Mutsuzaki; Martin Theobald; Ander de Keijzer; Jennifer Widom; Parag Agrawal; Omar Benjelloun; Anish Das Sarma; Raghotham Murthy; Tomoe Sugihara (CIDR, 2007)