%0 Journal Article
%A Thomas G. Berry
%A Sarel Venter
%T Integral formulae associated with non-parameter invariant multiple integral problems of arbitrary order in the calculus of variations.
%J Aequationes mathematicae
%D 1980
%P 200-224
%V 21
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1980__21_182431/
%F AM2_1980__21_182431