%0 Journal Article
%A Buffa, Annalisa
%A Monk, Peter
%T Error estimates for the ultra weak variational formulation of the Helmholtz equation
%J ESAIM: Modélisation mathématique et analyse numérique
%D 2008
%P 925-940
%V 42
%N 6
%I EDP-Sciences
%U http://archive.numdam.org/articles/10.1051/m2an:2008033/
%R 10.1051/m2an:2008033
%G en
%F M2AN_2008__42_6_925_0