Noam Chomsky. On certain formal properties of grammars. Information and Control, 2(2):137-167, 1959.
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@article{chomsky59,
Author = {Chomsky, Noam},
Title = {On certain formal properties of grammars},
Journal = {Information and Control},
Volume = {2},
Number = {2},
Pages = {137--167},
Year = {1959}
}
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