On procedures as open subroutines. II

Formal Languages and their Relation to Automata

James B. Morris · Nuclear Science and Engineering · 1970 · 1K citations

Computing, Computer Engineering, Computer Science +12

Revised report on the algorithmic language ALGOL 60

John Backus, Friedrich L. Bauer, J. Green et al. · Communications of the ACM · 1963 · 909 citations · Full text

Computing, Computer Science, Mathematics +3

Indexed Grammars—An Extension of Context-Free Grammars

Alfred V. Aho · Journal of the ACM · 1968 · 441 citations · Full text

Computing, Computer Science, Mathematics +16

Correspondence between ALGOL 60 and Church's Lambda-notation

P. J. Landin · Communications of the ACM · 1965 · 425 citations · Full text

Humanities, Classics, Biblical Studies +5

Mappings and grammars on trees

William C. Rounds · Theory of Computing Systems · 1970 · 360 citations · Full text

Language Studies, Computer Science, Syntax +7