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ORCID"The Structure of Context-Free Grammatical Families."
Armin B. Cremers, Seymour Ginsburg, Edwin H. Spanier (1977)
- Armin B. Cremers, Seymour Ginsburg, Edwin H. Spanier:
The Structure of Context-Free Grammatical Families. J. Comput. Syst. Sci. 15(3): 262-279 (1977)
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