%0 Journal Article
%A V. V. Vershinin
%A V. G. Gorbunov
%T N.~Ray's elements as obstructions to orientability of symplectic cobordisms
%J Doklady Akademii Nauk
%D 1985
%P 1289-1292
%V 285
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1985_285_6_a0/
%G ru
%F DAN_1985_285_6_a0