TY - JOUR AU - L. V. Keldysh TI - Some problems of topology in Euclidean spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1961 SP - 1 EP - 15 VL - 16 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1961_16_1_a0/ LA - en ID - RM_1961_16_1_a0 ER -