@article{GDZPPN000367168,
title = {Bounding the Piercing Number.},
journal = {Discrete \& computational geometry},
volume = {13},
year = {1995},
pages = {245-256},
zbl = {0826.52006},
url = {http://dml.mathdoc.fr/item/GDZPPN000367168}
}
Kalai, G.; Alon, N. Bounding the Piercing Number.. Discrete & computational geometry, Tome 13 (1995) pp. 245-256. http://gdmltest.u-ga.fr/item/GDZPPN000367168/