NASA NTRS · 19650032997
A note on asymmetry in phrase structure grammars.
Abstract
Equivalence of one-way grammars to context-free grammars, showing nonnecessity for restrictions on rules
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Matthews, G. H.. 1964-09-01. A note on asymmetry in phrase structure grammars.. https://ntrs.nasa.gov/citations/19650032997
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