Towards heterogeneous multimedia information systems: The garlic approachM. CareyL. Haaset al.1995RIDE-DOM 1995
A nonstandard approach to the logical omniscience problemRonald FaginJoseph Y. Halpernet al.1995Artificial Intelligence
Simple Conditions for Guaranteeing Higher Normal Forms in Relational DatabasesC.J. DateRonald Fagin1992ACM Transactions on Database Systems (TODS)