TY  - JOUR
AU  - Beifang Chen
TI  - On the Euler Characteristic of Finite Unions of Convex Sets.
JO  - Discrete & computational geometry
PY  - 1993
SP  - 79
EP  - 94
VL  - 10
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1993__10_2_131261/
ID  - DCG_1993__10_2_131261
ER  -