TY  - JOUR
AU  - A. Smajdor
TI  - Additive selections of superadditive set-valued functions.
JO  - Aequationes mathematicae
PY  - 1990
SP  - 121
EP  - 128
VL  - 39
IS  - 2-3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137343/
ID  - AM2_1990__39_2-3_137343
ER  -