%0 Journal Article
%A Chiacchio, F. 
%T Estimates for the first eigenfunction of linear eigenvalue problems via Steiner symmetrization.
%J Publicacions matemàtiques
%D 2009
%P 47-71
%V 53
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PM_2009_2009_1_a1/
%G en
%F PM_2009_2009_1_a1