TY - JOUR AU - И.М. Гельфанд AU - M.A. Наймарк TI - On the imbedding of normed rings into the ring of operators in Hilbert space JO - Matematičeskij sbornik PY - 1943 SP - 197 EP - 217 VL - 54 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MS_1943__54_2_a1/ LA - en ID - MS_1943__54_2_a1 ER -