Geodesic
Some theorems on labelled bracketings used in transformational grammars
Kybernetika, Tome 4 (1968) no. 2, pp. 87-92 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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Classification : 68Q45, 94.50 
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Čulík, Karel. Some theorems on labelled bracketings used in transformational grammars. Kybernetika, Tome 4 (1968) no. 2, pp. 87-92. http://geodesic.mathdoc.fr/item/KYB_1968_4_2_a0/

[1] S. Peters R. W. Ritchie: On the generative power of transformational grammars (mimeographed).

[2] N. Chomsky: Aspects of the Theory of Syntax. MIT 1965.

[3] S. C. Kleene: Introduction to Metamatematics. N. Y. 1965.

[4] K. Čulík: On some transformations in context-free grammars and languages. Czech. Math. Journ. 17 (92), (1967), 278-311. | MR

[5] K. Čulík: On the ordered rooted trees used in theory of laaguages. Théorie des graphes-journées internationales ďétude, Rome, juillet 1966. Dunod, Paris-Gordon and Breach, New York 1967, 69-76.