%0 Journal Article %A A. M. Khludnev %T Variational inequalities in contact plastic problems %J Differencialʹnye uravneniâ %D 1988 %P 1622-1628 %V 24 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_9_a17/ %G ru %F DE_1988_24_9_a17