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"Conjunctive-Query Containment and Constraint Satisfaction."
Phokion G. Kolaitis, Moshe Y. Vardi (2000)
- Phokion G. Kolaitis, Moshe Y. Vardi:
Conjunctive-Query Containment and Constraint Satisfaction. J. Comput. Syst. Sci. 61(2): 302-332 (2000)
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