%0 Journal Article
%A V. A. Gurvich
%T Criteria for the nonemptiness of dual cores
%J Doklady Akademii Nauk
%D 1997
%P 159-162
%V 352
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1997_352_2_a2/
%G ru
%F DAN_1997_352_2_a2