TY - JOUR TI - From the editor of this issue JO - Sbornik. Mathematics PY - 2017 SP - 1577 VL - 208 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2017_208_11_a0/ LA - en ID - SM_2017_208_11_a0 ER -