TY  - JOUR
AU  - M. Sharir
AU  - P.K. Agarwal
TI  - On the Number of Views of Polyhedral Terrains.
JO  - Discrete & computational geometry
PY  - 1994
SP  - 177
EP  - 182
VL  - 12
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1994__12_1_131324/
ID  - DCG_1994__12_1_131324
ER  -