@article{GDZPPN000366455,
title = {Unit Squares Intersecting All Secants of a Square.},
journal = {Discrete \& computational geometry},
volume = {11},
year = {1994},
pages = {235-240},
zbl = {0799.52015},
url = {http://dml.mathdoc.fr/item/GDZPPN000366455}
}
Valtr, Pavel. Unit Squares Intersecting All Secants of a Square.. Discrete & computational geometry, Tome 11 (1994) pp. 235-240. http://gdmltest.u-ga.fr/item/GDZPPN000366455/