Taniguchi, Kimikazu A new boson expansion theory utilizing a norm operator. (English) Zbl 07745589 PTEP, Prog. Theor. Exper. Phys. 2023, No. 7, Article ID 073D01, 32 p. (2023). MSC: 81V73 35C20 47A30 35B20 81S05 76Q05 30B10 PDFBibTeX XMLCite \textit{K. Taniguchi}, PTEP, Prog. Theor. Exper. Phys. 2023, No. 7, Article ID 073D01, 32 p. (2023; Zbl 07745589) Full Text: DOI arXiv
Kratz, W. An extremal problem related to the maximum modulus theorem for Stokes functions. (English) Zbl 0912.35121 Z. Anal. Anwend. 17, No. 3, 599-613 (1998). MSC: 35Q30 35B50 76D07 47A30 15A45 PDFBibTeX XMLCite \textit{W. Kratz}, Z. Anal. Anwend. 17, No. 3, 599--613 (1998; Zbl 0912.35121) Full Text: DOI