%0 Journal Article
%A N. L. Poliakov
%A M. V. Shamolin
%T On symmetric closed class of function preserving every unary predicate
%J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ
%D 2013
%P 61-73
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VSGU_2013_6_a6/
%G ru
%F VSGU_2013_6_a6