TY - JOUR AU - N. M. Ostianu TI - Differential-geometric structures on differentiable manifolds JO - Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara PY - 1977 SP - 89 EP - 111 VL - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/INTG_1977_8_a4/ LA - ru ID - INTG_1977_8_a4 ER -