%0 Journal Article
%A N. A. Serdyukova
%T On generalizations of purity
%J Algebra i logika
%D 1991
%P 432-456
%V 30
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1991_30_4_a3/
%G ru
%F AL_1991_30_4_a3