| Title:
             | 
A note on $\varepsilon$-rules in context-free grammars (English) | 
| Author:
             | 
Gruska, Jozef | 
| Language:
             | 
English | 
| Journal:
             | 
Kybernetika | 
| ISSN:
             | 
0023-5954 | 
| Volume:
             | 
11 | 
| Issue:
             | 
1 | 
| Year:
             | 
1975 | 
| Pages:
             | 
(26)-31 | 
| . | 
| Category:
             | 
math | 
| . | 
| MSC:
             | 
68A20 | 
| MSC:
             | 
68A30 | 
| MSC:
             | 
68Q45 | 
| idZBL:
             | 
Zbl 0305.68061 | 
| idMR:
             | 
MR0395317 | 
| . | 
| Date available:
             | 
2009-09-24T16:43:48Z | 
| Last updated:
             | 
2012-06-05 | 
| Stable URL:
             | 
http://hdl.handle.net/10338.dmlcz/124233 | 
| . | 
| Reference:
             | 
[1] S. Ginsburg: The mathematical theory of context-free languages.McGraw-Hill, New York 1966. Zbl 0184.28401, MR 0211815 | 
| Reference:
             | 
[2] J. Gruska: Some classifications of context-free languages.Information and Control 14 (1969), 2, 152-179. Zbl 0174.28901, MR 0253836 | 
| Reference:
             | 
[3] J. Gruska: A few remarks on the index of context-free grammars and languages.Information and Control 19 (1971), 3, 216-223. Zbl 0241.68036, MR 0311153 | 
| Reference:
             | 
[4] J. Gruska: On the size of context-free grammars.Kybernetika 8 (1972) 3, 213-218. Zbl 0241.68037, MR 0331877 | 
| . |