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On a classification of context-free languages. (English) Zbl 0158.25401

MSC:
68Q45 Formal languages and automata
68Q42 Grammars and rewriting systems
Software:
ALGOL 60
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References:
[1] N. Chomsky: Formal Properties of Grammars. Handbook of Mathematical Psychology Vol. 2. Willey, New York, 1963. · Zbl 0156.25303
[2] K. Čulík: On equivalent and similar grammars of ALGOL-like languages. Comm. Math. Univ. Carol. 5 (1964), 57-59.
[3] S. Ginsburg H. G. Rice: Two Families of Languages Related to ALGOL. JACM 9 (1962), 350-371. · Zbl 0196.01803 · doi:10.1145/321127.321132
[4] J. Gruska: On sets generated by context-free grammars. Kybernetika 2 (1966), 6, 483 - 493. · Zbl 0158.25308 · eudml:28866
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