%0 Journal Article
%A Nowak, Marek
%T A Syntactic Approach to Closure Operation
%J Bulletin of the Section of Logic
%D 2017
%V 46
%N 3-4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/BSL_2017_46_3-4_a0/
%G en
%F BSL_2017_46_3-4_a0