Classification of formal languages by functional binary transductions

On Context-Free Languages

Rohit Parikh · Journal of the ACM · 1966 · 782 citations · Full text

Computing, Computer Science, Mathematics +17

The mathematical theory of context-free languages

H. P. Edmundson · Information Storage and Retrieval · 1967 · 738 citations

Computing, Computer Science, Mathematics +11

On Relations Defined by Generalized Finite Automata

Calvin C. Elgot, J. E. Mezei · IBM Journal of Research and Development · 1965 · 315 citations

Computing, Computer Science, Mathematics +13

Abstract families of languages

Seymour Ginsburg, Sheila A. Greibach · 1967 · 201 citations

Language Studies, Computer Science, Computational Linguistics +7

Operations Which Preserve Definability in Languages

Seymour Ginsburg, Gene F. Rose · Journal of the ACM · 1963 · 70 citations · Full text

Computing, Computer Science, Language Documentation +6