TY - JOUR AU - I. M. Krichever TI - Bordisms of groups acting freely on spheres JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1971 VL - 26 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1971_26_6_a9/ LA - ru ID - RM_1971_26_6_a9 ER -