TY - JOUR AU - Piotr Niemiec TI - Separate and joint similarity to families of normal operators JO - Studia Mathematica PY - 2002 SP - 39 EP - 62 VL - 149 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm149-1-3/ DO - 10.4064/sm149-1-3 LA - en ID - 10_4064_sm149_1_3 ER -