TY  - JOUR
AU  - Pavel Valtr
TI  - Unit Squares Intersecting All Secants of a Square.
JO  - Discrete & computational geometry
PY  - 1994
SP  - 235
EP  - 240
VL  - 11
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131300/
ID  - DCG_1994__11_3_131300
ER  -