Naumann, J. Existenzsätze für nichtlineare Eigenwertprobleme. (German) Zbl 0256.49048 Monatsber. Deutsch. Akad. Wiss. Berlin 13, 709-713 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 49R50 Variational methods for eigenvalues of operators (MSC2000) 47J05 Equations involving nonlinear operators (general) PDFBibTeX XMLCite \textit{J. Naumann}, Monatsber. Deutsch. Akad. Wiss. Berlin 13, 709--713 (1971; Zbl 0256.49048)