TY - JOUR AU - V. P. Fedotov TI - Differentiability in topological groups JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1976 VL - 31 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1976_31_5_a33/ LA - ru ID - RM_1976_31_5_a33 ER -