%0 Journal Article
%A V. A. Smirnov
%T Secondary cohomology operations
%J Doklady Akademii Nauk
%D 1986
%P 301-304
%V 288
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1986_288_2_a9/
%G ru
%F DAN_1986_288_2_a9