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"Characterizing Derivation Trees of Context-Free Grammars through a ..."
James W. Thatcher (1967)
- James W. Thatcher:
Characterizing Derivation Trees of Context-Free Grammars through a Generalization of Finite Automata Theory. J. Comput. Syst. Sci. 1(4): 317-322 (1967)

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