Media type: E-Article; Text Title: Dual variational methods for a nonlinear Helmholtz equation with sign-changing nonlinearity Contributor: Mandel, Rainer [Author]; Scheider, Dominic [Author]; Yeşil, Tolga [Author] imprint: Springer, 2021-09-15 Published in: Calculus of variations and partial differential equations, 60 (4), Article no: 133 ; ISSN: 0944-2669, 1432-0835 Language: English DOI: https://doi.org/10.5445/IR/1000137385; https://doi.org/10.1007/s00526-021-02006-5 ISSN: 0944-2669; 1432-0835 Keywords: Mathematics Origination: Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Access State: Open Access