TY  - JOUR
AU  - June M. Parker
TI  - The sigma-core of a cooperative game.
JO  - Manuscripta mathematica
PY  - 1991
SP  - 247
EP  - 254
VL  - 70
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155585/
ID  - MM2_1991__70_1_155585
ER  -