%0 Journal Article
%A Benoı̂t Perthame
%A Luis Vega
%T Energy concentration and Sommerfeld condition for Helmholtz and Liouville equations
%J Comptes Rendus. Mathématique
%D 2003
%P 587-592
%V 337
%N 9
%I Elsevier
%R 10.1016/j.crma.2003.09.006
%G en
%F CRMATH_2003__337_9_587_0