Hashiguchi, Kosaburo; Kunai, Takahiro; Jimbo, Shuji Finite codes over free bonoids. (English) Zbl 1095.68606 J. Autom. Lang. Comb. 7, No. 4, 505-518 (2002). MSC: 68Q45 68Q70 PDFBibTeX XMLCite \textit{K. Hashiguchi} et al., J. Autom. Lang. Comb. 7, No. 4, 505--518 (2002; Zbl 1095.68606)
Hashiguchi, Kosaburo; Ichihara, Shin; Jimbo, Shuji Formal languages over free binoids. (English) Zbl 0965.68038 J. Autom. Lang. Comb. 5, No. 3, 219-234 (2000). MSC: 68Q45 PDFBibTeX XMLCite \textit{K. Hashiguchi} et al., J. Autom. Lang. Comb. 5, No. 3, 219--234 (2000; Zbl 0965.68038)