%0 Journal Article
%A Rund, H.
%T A Geometrical Theory of Multiple Integral Problems in the Calculus of Variations
%J Canadian journal of mathematics
%D 1968
%P 639-657
%V 20
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-062-1/
%R 10.4153/CJM-1968-062-1
%F 10_4153_CJM_1968_062_1