%0 Journal Article
%A B. Kamiński
%A  
%A  
%T On extremal and perfect σ-algebras for $ℤ^{d}$-actions on a Lebesgue space
%J Studia Mathematica
%D 1997
%P 173-178
%V 124
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4064/sm-124-2-173-178/
%R 10.4064/sm-124-2-173-178
%G fr
%F 10_4064_sm_124_2_173_178