%0 Journal Article
%A June M. Parker
%T The sigma-core of a cooperative game.
%J Manuscripta mathematica
%D 1991
%P 247-254
%V 70
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155585/
%F MM2_1991__70_1_155585