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Gray, W. Steven; Herencia-Zapana, Heber; Duffaut Espinosa, Luis A.; González, Oscar R. Bilinear system interconnections and generating series of weighted Petri nets. (English) Zbl 1191.93003 Syst. Control Lett. 58, No. 12, 841-848 (2009). MSC: 93A13 93C10 93C65 PDFBibTeX XMLCite \textit{W. S. Gray} et al., Syst. Control Lett. 58, No. 12, 841--848 (2009; Zbl 1191.93003) Full Text: DOI
Mercado, A.; Ray Liu, K. J. NP-hardness of the stable matrix in unit interval family problem in discrete time. (English) Zbl 0974.93045 Syst. Control Lett. 42, No. 4, 261-265 (2001). MSC: 93D09 93C55 68Q25 PDFBibTeX XMLCite \textit{A. Mercado} and \textit{K. J. Ray Liu}, Syst. Control Lett. 42, No. 4, 261--265 (2001; Zbl 0974.93045) Full Text: DOI