%0 Journal Article %A S. E. Pastukhova %T Resolvent approximations in $L^2$-norm for elliptic operators acting in a perforated space %J Contemporary Mathematics. Fundamental Directions %D 2020 %P 314-334 %V 66 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2020_66_2_a7/ %G ru %F CMFD_2020_66_2_a7