TY  - JOUR
AU  - Micha Sharir
AU  - Janos Pach
TI  - The Upper Envelope of Piecewise Linear Functions and the Boundary of a Region Enclosed by Convex Plates: Combinatorial Analysis.
JO  - Discrete & computational geometry
PY  - 1989
SP  - 291
EP  - 310
VL  - 4
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131081/
ID  - DCG_1989__4_6_131081
ER  -