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"The Set of Minimal Words of a Context-Free Language is Context-Free."
Jean Berstel, Luc Boasson (1997)
- Jean Berstel, Luc Boasson:
The Set of Minimal Words of a Context-Free Language is Context-Free. J. Comput. Syst. Sci. 55(3): 477-488 (1997)

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