TY - JOUR AU - M. G. Krein TI - Angular localization of the spectrum of a multiplicative integral in a Hilbert space JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1969 SP - 89 EP - 90 VL - 3 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1969_3_1_a9/ LA - ru ID - FAA_1969_3_1_a9 ER -