%0 Journal Article
%A François Hamel
%A Nikolai Nadirashvili
%A Emmanuel Russ
%T Some isoperimetric problems for the principal eigenvalues of second-order elliptic operators in divergence form
%J Comptes Rendus. Mathématique
%D 2007
%P 169-174
%V 344
%N 3
%I Elsevier
%R 10.1016/j.crma.2006.11.025
%G en
%F CRMATH_2007__344_3_169_0