%0 Journal Article
%A G. I. Kats
%T Generalization of the group principle of duality
%J Doklady Akademii Nauk
%D 1961
%P 275-278
%V 138
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a6/
%G ru
%F DAN_1961_138_2_a6