TY - JOUR AU - V. S. Gavrilov TI - The Cauchy problem for an abstract second order ordinary differential equation JO - Sbornik. Mathematics PY - 2020 SP - 643 EP - 688 VL - 211 IS - 5 UR - http://geodesic.mathdoc.fr/item/SM_2020_211_5_a1/ LA - en ID - SM_2020_211_5_a1 ER -