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"On the Representation and Querying of Sets of Possible Worlds."
Serge Abiteboul, Paris C. Kanellakis, Gösta Grahne (1991)
- Serge Abiteboul, Paris C. Kanellakis, Gösta Grahne:
On the Representation and Querying of Sets of Possible Worlds. Theor. Comput. Sci. 78(1): 158-187 (1991)
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