PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Expressiveness of structured document query languages based on attribute grammars
Journal of the ACM (JACM)
Query automata over finite trees
Theoretical Computer Science
Regularly Extended Two-Way Nondeterministic Tree Automata
CIAA '00 Revised Papers from the 5th International Conference on Implementation and Application of Automata
Journal of Computer and System Sciences
Cardinality constraints in disjunctive deductive databases
Proceedings of the 2nd international conference on Semantics in databases
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