Handbook of formal languages, vol. 1: word, language, grammar
Handbook of formal languages, vol. 1: word, language, grammar
Contextual grammars and natural languages
Handbook of formal languages, vol. 2
Contextual grammars and formal languages
Handbook of formal languages, vol. 2
Marcus Contextual Grammars
Multiple-entry finite automata
Journal of Computer and System Sciences
On union-free and deterministic union-free languages
TCS'12 Proceedings of the 7th IFIP TC 1/WG 202 international conference on Theoretical Computer Science
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We discuss external contextual grammars with choice where the choice language belongs to a family of subregular languages. We determine the hierarchy of language families of contextual languages which is obtained by the use of nilpotent, combinational, definite, regular suffix closed, and regular commutative languages as choice languages.