%0 Journal Article
%A Tkachuk, Vladimir V.
%T Some non-multiplicative properties are $l$-invariant
%J Commentationes Mathematicae Universitatis Carolinae
%D 1997
%P 169-175
%V 38
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1997__38_1_a15/
%G en
%F CMUC_1997__38_1_a15