Kratz, Werner An extremal problem for Stokes functions in the plane. (English) Zbl 0888.35076 Analysis 17, No. 2-3, 219-225 (1997). Reviewer: O.Dementev (Chelyabinsk) MSC: 35Q30 30E20 76D07 PDFBibTeX XMLCite \textit{W. Kratz}, Analysis 17, No. 2--3, 219--225 (1997; Zbl 0888.35076) Full Text: DOI
Schmid, Johannes The maximum modulus eigenvalues of certain non-negative matrices under perturbation. (English) Zbl 0494.15005 Analysis 2, 163-175 (1982). MSC: 15A18 15B48 15A42 PDFBibTeX XMLCite \textit{J. Schmid}, Analysis 2, 163--175 (1982; Zbl 0494.15005) Full Text: DOI