TY - JOUR AU - M. T. Karaev TI - On the spectral multiplicity of a direct sum of operators JO - Colloquium Mathematicum PY - 2006 SP - 105 EP - 112 VL - 104 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm104-1-7/ DO - 10.4064/cm104-1-7 LA - en ID - 10_4064_cm104_1_7 ER -