TY - JOUR AU - A. E. Tsybyshev TI - A step toward the mixed-characteristic case of the Grothendieck--Serre conjecture JO - Algebra i analiz PY - 2019 SP - 246 EP - 254 VL - 31 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2019_31_1_a10/ LA - ru ID - AA_2019_31_1_a10 ER -