Brodskij, M. S. Unitary operator colligations and their characteristic functions. (English) Zbl 0415.47007 Russ. Math. Surv. 33, No. 4, 159-191 (1978). MSC: 47A45 PDFBibTeX XMLCite \textit{M. S. Brodskij}, Russ. Math. Surv. 33, No. 4, 159--191 (1978; Zbl 0415.47007) Full Text: DOI
Brodskij, M. S. Unitäre Operatorknoten und ihre charakteristischen Funktionen. (Russian) Zbl 0386.47003 Usp. Mat. Nauk 33, No. 4(202), 141-168 (1978). MSC: 47A45 PDFBibTeX XMLCite \textit{M. S. Brodskij}, Usp. Mat. Nauk 33, No. 4(202), 141--168 (1978; Zbl 0386.47003)