TY - JOUR AU - S. V. Galaev TI - Classification of prolonged bi-metric structures on distributions of non-zero curvature of sub-Riemannian manifolds JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2018 SP - 263 EP - 273 VL - 18 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2018_18_3_a1/ LA - ru ID - ISU_2018_18_3_a1 ER -