%0 Journal Article
%A Antonio Cañada
%A Salvador Villegas
%T Lyapunov inequalities for Neumann boundary conditions at higher eigenvalues
%J Journal of the European Mathematical Society
%D 2010
%P 163-178
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4171/jems/193/
%R 10.4171/jems/193
%F JEMS_2010_12_1_a6