Indexed Grammars—An Extension of Context-Free Grammars
Journal of the ACM (JACM)
Theories of abstract automata (Prentice-Hall series in automatic computation)
Theories of abstract automata (Prentice-Hall series in automatic computation)
On the mathematical properties of linguistic theories
Computational Linguistics - Special issue on mathematical properties of grammatical formalisms
On two recent attempts to show that English is not a CFL
Computational Linguistics - Special issue on mathematical properties of grammatical formalisms
Copying in natural languages, context-freeness, and Queue Grammars
ACL '86 Proceedings of the 24th annual meeting on Association for Computational Linguistics
LR(0) conjunctive grammars and deterministic synchronized alternating pushdown automata
CSR'11 Proceedings of the 6th international conference on Computer science: theory and applications
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