%0 Journal Article
%A G. G. Kasparov
%T Lorentz groups: $K$-theory of unitary representations and crossed
%J Doklady Akademii Nauk
%D 1984
%P 541-545
%V 275
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a5/
%G ru
%F DAN_1984_275_3_a5