TY  - JOUR
AU  - H. Edelsbrunner
TI  - The Upper Envelope of Piecewise Linear Functions: Tight Bounds on the Number of Faces.
JO  - Discrete & computational geometry
PY  - 1989
SP  - 337
EP  - 344
VL  - 4
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131083/
ID  - DCG_1989__4_6_131083
ER  -