Negro, A. Application of the Banach-Steinhaus theorem to best approximation of systems. (English) Zbl 0288.93013 Boll. Unione Mat. Ital., IV. Ser. 7, 176-185 (1973). MSC: 93C05 93C30 93C99 49M99 PDFBibTeX XMLCite \textit{A. Negro}, Boll. Unione Mat. Ital., IV. Ser. 7, 176--185 (1973; Zbl 0288.93013)
Kirlica, V. P. Invarianz eines linearen Systems mit Retardierung. (Russian) Zbl 0266.93034 Differ. Uravn. 9, 955-957 (1973). MSC: 93C99 93C05 93C30 34K05 PDFBibTeX XMLCite \textit{V. P. Kirlica}, Differ. Uravn. 9, 955--957 (1973; Zbl 0266.93034)
Wolovich, W. A. Static decoupling. (English) Zbl 0266.93015 IEEE Trans. Autom. Control 18, 536-537 (1973). MSC: 93C05 93C99 93C30 PDFBibTeX XMLCite \textit{W. A. Wolovich}, IEEE Trans. Autom. Control 18, 536--537 (1973; Zbl 0266.93015) Full Text: DOI
Hewer, G. A.; Nazaroff, G. J. Observer theory for delayed differential equations. (English) Zbl 0266.93006 Int. J. Control, I. Ser. 18, 1-7 (1973). MSC: 93B05 93C30 34K05 34D20 93C05 93C99 93D05 PDFBibTeX XMLCite \textit{G. A. Hewer} and \textit{G. J. Nazaroff}, Int. J. Control, I. Ser. 18, 1--7 (1973; Zbl 0266.93006) Full Text: DOI