%0 Journal Article
%A Wysocki, K.
%T Multiple critical points for variational problems on partially ordered Hilbert spaces
%J Annales de l'I.H.P. Analyse non linéaire
%D 1990
%P 287-304
%V 7
%N 4
%I Gauthier-Villars
%U http://www.numdam.org/item/AIHPC_1990__7_4_287_0/
%G en
%F AIHPC_1990__7_4_287_0