Gonczarowski, J.; Kleijn, H. C. M.; Rozenberg, G. Closure properties of selective substitution grammars. II. (English) Zbl 0521.68086 Int. J. Comput. Math. 14, 109-135 (1983). MSC: 68Q45 PDF BibTeX XML Cite \textit{J. Gonczarowski} et al., Int. J. Comput. Math. 14, 109--135 (1983; Zbl 0521.68086) Full Text: DOI
Gonczarowski, J.; Kleijn, H. C. M.; Rozenberg, G. Closure properties of selective substitution grammars. I. (English) Zbl 0514.68071 Int. J. Comput. Math. 14, 19-42 (1983). MSC: 68Q45 PDF BibTeX XML Cite \textit{J. Gonczarowski} et al., Int. J. Comput. Math. 14, 19--42 (1983; Zbl 0514.68071) Full Text: DOI
Kleijn, H. C. M.; Rozenberg, G. Multi grammars. (English) Zbl 0508.68046 Int. J. Comput. Math. 12, 177-201 (1983). MSC: 68Q45 PDF BibTeX XML Cite \textit{H. C. M. Kleijn} and \textit{G. Rozenberg}, Int. J. Comput. Math. 12, 177--201 (1983; Zbl 0508.68046) Full Text: DOI