%0 Journal Article
%A A. V. Arutyunov
%T On the theory of degenerate quadratic forms in the classical calculus of variations
%J Izvestiya. Mathematics 
%D 1995
%P 433-476
%V 45
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1995_45_3_a0/
%G en
%F IM2_1995_45_3_a0