Honkala, Juha On D0L systems with immigration. (English) Zbl 0801.68104 Theor. Comput. Sci. 120, No. 2, 229-245 (1993). MSC: 68Q45 PDFBibTeX XMLCite \textit{J. Honkala}, Theor. Comput. Sci. 120, No. 2, 229--245 (1993; Zbl 0801.68104) Full Text: DOI
Honkala, J.; Salomaa, A. Characterization results about \(L\) codes. (English) Zbl 0751.68033 RAIRO, Inform. Théor. Appl. 26, No. 3, 287-301 (1992). MSC: 68Q45 PDFBibTeX XMLCite \textit{J. Honkala} and \textit{A. Salomaa}, RAIRO, Inform. Théor. Appl. 26, No. 3, 287--301 (1992; Zbl 0751.68033) Full Text: DOI EuDML