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Granovskyi, Yaroslav I.; Oridoroga, Leonid L. Krein-von Neumann extension of an even order differential operator on a finite interval. (English) Zbl 06976045 Opusc. Math. 38, No. 5, 681-698 (2018). MSC: 47A05 PDFBibTeX XMLCite \textit{Y. I. Granovskyi} and \textit{L. L. Oridoroga}, Opusc. Math. 38, No. 5, 681--698 (2018; Zbl 06976045) Full Text: DOI arXiv