%0 Journal Article %A Ya. A. Èyubov %T A variational principle for viscoelastic bodies in problems of %J Doklady Akademii Nauk %D 1988 %P 1078-1081 %V 303 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_303_5_a11/ %G ru %F DAN_1988_303_5_a11