Geodesic
A note on $\varepsilon$-rules in context-free grammars
Kybernetika, Tome 11 (1975) no. 1, pp. 26-31 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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Classification : 68A20, 68A30, 68Q45 
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     title = {A note on $\varepsilon$-rules in context-free grammars},
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     url = {http://geodesic.mathdoc.fr/item/KYB_1975_11_1_a2/}
}
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Gruska, Jozef. A note on $\varepsilon$-rules in context-free grammars. Kybernetika, Tome 11 (1975) no. 1, pp. 26-31. http://geodesic.mathdoc.fr/item/KYB_1975_11_1_a2/

[1] S. Ginsburg: The mathematical theory of context-free languages. McGraw-Hill, New York 1966. | MR | Zbl

[2] J. Gruska: Some classifications of context-free languages. Information and Control 14 (1969), 2, 152-179. | MR | Zbl

[3] J. Gruska: A few remarks on the index of context-free grammars and languages. Information and Control 19 (1971), 3, 216-223. | MR | Zbl

[4] J. Gruska: On the size of context-free grammars. Kybernetika 8 (1972) 3, 213-218. | MR | Zbl