%0 Journal Article
%A Viorel Barbu
%T Necessary Conditions for Multiple Integral Problem in the Calculus of Variations.
%J Mathematische Annalen
%D 1982
%P 175-190
%V 260
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1982__260_163665/
%F MAN_1982__260_163665