Albeverio, Sergio; Gesztesy, Friedrich; Høegh-Krohn, Raphael; Holden, Helge Point interactions in two dimensions: basic properties, approximations and applications in solid state physics. (English) Zbl 0619.35030 J. Reine Angew. Math. 380, 87-107 (1987). MSC: 35J10 35P05 35P25 PDFBibTeX XMLCite \textit{S. Albeverio} et al., J. Reine Angew. Math. 380, 87--107 (1987; Zbl 0619.35030) Full Text: Crelle EuDML
Quittner, Pavol Bifurcation points and eigenvalues of inequalities of reaction-diffusion type. (English) Zbl 0617.35053 J. Reine Angew. Math. 380, 1-13 (1987). MSC: 35J85 35K85 35K57 35P30 PDFBibTeX XMLCite \textit{P. Quittner}, J. Reine Angew. Math. 380, 1--13 (1987; Zbl 0617.35053) Full Text: DOI Crelle EuDML