%0 Journal Article %A G. V. Sandrakov %T Homogenization of variational inequalities for obstacle problems %J Sbornik. Mathematics %D 2005 %P 541-560 %V 196 %N 4 %U http://geodesic.mathdoc.fr/item/SM_2005_196_4_a3/ %G en %F SM_2005_196_4_a3