TY - JOUR AU - Gavin Brown TI - Spectral extension and power independence in measure algebras JO - Studia Mathematica PY - 1981 SP - 81 EP - 99 VL - 70 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-70-1-81-99/ DO - 10.4064/sm-70-1-81-99 LA - en ID - 10_4064_sm_70_1_81_99 ER -