TY - JOUR AU - S. E. Pastukhova TI - Resolvent approximations in $L^2$-norm for elliptic operators acting in a perforated space JO - Contemporary Mathematics. Fundamental Directions PY - 2020 SP - 314 EP - 334 VL - 66 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2020_66_2_a7/ LA - ru ID - CMFD_2020_66_2_a7 ER -