Bögli, Sabine; Kennedy, James B.; Lang, Robin On the eigenvalues of the Robin Laplacian with a complex parameter. (English) Zbl 1490.35108 Anal. Math. Phys. 12, No. 1, Paper No. 39, 60 p. (2022). Reviewer: Davide Buoso (Alessandria) MSC: 35J05 35J25 35P10 35P15 35S05 47A10 81Q12 PDFBibTeX XMLCite \textit{S. Bögli} et al., Anal. Math. Phys. 12, No. 1, Paper No. 39, 60 p. (2022; Zbl 1490.35108) Full Text: DOI arXiv
Kennedy, James B.; Lang, Robin On the eigenvalues of quantum graph Laplacians with large complex \(\delta\) couplings. (English) Zbl 1470.34081 Port. Math. (N.S.) 77, No. 2, 133-161 (2020). Reviewer: Jiři Lipovský (Hradec Králové) MSC: 34B45 34L15 81Q12 81Q35 PDFBibTeX XMLCite \textit{J. B. Kennedy} and \textit{R. Lang}, Port. Math. (N.S.) 77, No. 2, 133--161 (2020; Zbl 1470.34081) Full Text: DOI arXiv