%0 Journal Article
%A G. A. Seregin
%T Differential properties of extremals of variational problems that arise in the theory of plasticity
%J Differencialʹnye uravneniâ
%D 1990
%P 1033-1044
%V 26
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_6_a12/
%G ru
%F DE_1990_26_6_a12