TY - JOUR AU - V. A. Koshcheev TI - The connectivity and approximative properties of sets in linear normed spaces JO - Matematičeskie zametki PY - 1975 SP - 193 EP - 204 VL - 17 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1975_17_2_a2/ LA - ru ID - MZM_1975_17_2_a2 ER -