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A note on leftmost restricted random context grammars. (English) Zbl 0261.68038

MSC:
68Q45 Formal languages and automata
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[1] Abraham, S., Some questions of phrase structure grammars, Computational linguistics, 4, 61-70, (1965)
[2] Cremers, A.B., Scattered context normal forms for context-sensitive grammars, () · Zbl 0285.68040
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[11] Salomaa, A., Periodically time-variant context-free grammars, Inform. contr., 17, 294-311, (1970) · Zbl 0222.68032
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[14] Van der Walt, A.P.J., Random context languages, Symp. on formal languages at the MFI oberwohlfach, (1970), Germany · Zbl 0221.68047
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