%0 Journal Article
%A Mandel, Rainer
%A Moitier, Zoïs
%A Verfürth, Barbara
%T Nonlinear Helmholtz equations with sign-changing diffusion coefficient
%J Comptes Rendus. Mathématique
%D 2022
%P 513-538
%V 360
%N G5
%I Académie des sciences, Paris
%U http://archive.numdam.org/articles/10.5802/crmath.322/
%R 10.5802/crmath.322
%G en
%F CRMATH_2022__360_G5_513_0