TY - JOUR AU - B. Kamiński TI - Generators of perfect σ-algebras of $Z^{d}$-actions JO - Studia Mathematica PY - 1991 SP - 11 EP - 21 VL - 99 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-99-1-11-21/ DO - 10.4064/sm-99-1-11-21 LA - en ID - 10_4064_sm_99_1_11_21 ER -