Henning Fernau Membership for 1-Limited ET0L Languages Is Not Decidable. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1994, v:30, n:4, pp:191-211 [Journal]
Gheorghe Paun On the Generative Capacity of Hybrid CD Grammar Systems. [Citation Graph (0, 0)][DBLP] Elektronische Informationsverarbeitung und Kybernetik, 1994, v:30, n:4, pp:231-244 [Journal]
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