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Context-free grammars on trees. (English) Zbl 1282.68151

Proceedings of the 1st annual ACM symposium on theory of computing, STOC’69, Marina del Rey, CA, USA, May 5–7, 1969. New York, NY: Association for Computing Machinery (ACM). 143-148 (1969).

MSC:

68Q42 Grammars and rewriting systems
68Q45 Formal languages and automata
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References:

[1] Aho, A. V., Indexed grammars—an extension of context-free grammars. IEEE Conf. Record, Symp. on Switching and Automata Theory (Oct., 1967).
[2] Bar-Hillel, Y., M. Perles and E. Shamir, On formal properties of simple phrase structure grammars. Z. Phonetik Sprachwiss. Kommunikat 14 (1961), 143-172. · Zbl 0106.34501
[3] Fischer, M., Grammars with macro-like productions. IEEE Conf. Record, Symp. on Switching and Automata Theory (Oct., 1968).
[4] Knuth, D., Semantics of context-free languages. Math. Systems Theory, vol. 2, no. 2 (June, 1968), pp. 127-158. · Zbl 0169.01401
[5] Petrone, L., Syntax-directed mappings of context-free languages. IEEE Conf. Record, Symp. on Switching and Automata Theory (Oct., 1968).
[6] Thatcher, J. W. and J. B. Wright, Generalized finite automata theory with an application to a decision problem of second-order logic. Math. Systems Theory, vol. 2, no. 1 (March, 1968), pp. 57-81. · Zbl 0157.02201
[7] Thatcher, J. W., Characterizing derivation trees of context-free grammars through a generalization of finite automata theory. J. Comp. Sys. Sci., vol. 1, no. 4 (Dec., 1967), pp. 317-322. · Zbl 0155.01802
[8] Rounds, W. C., Trees, transducers, and transformations. Ph.D. thesis, Stanford Univ., 1968.
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