TY - JOUR AU - L. N. Vaserstein AU - A. V. Mikhalev TI - The normal subgroups of the orthogonal group over a ring with JO - Algebra i logika PY - 1970 SP - 629 EP - 632 VL - 9 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1970_9_6_a1/ LA - ru ID - AL_1970_9_6_a1 ER -