TY - JOUR AU - Salah Mecheri TI - Isolated points of spectrum of $k$-quasi-$*$-class $A$ operators JO - Studia Mathematica PY - 2012 SP - 87 EP - 96 VL - 208 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm208-1-6/ DO - 10.4064/sm208-1-6 LA - en ID - 10_4064_sm208_1_6 ER -