@article{02161283,
title = {Packing densities of patterns.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {11},
year = {2004},
zbl = {1061.05007},
language = {en},
url = {http://dml.mathdoc.fr/item/02161283}
}
Barton, Reid W. Packing densities of patterns.. The Electronic Journal of Combinatorics [electronic only], Tome 11 (2004) . http://gdmltest.u-ga.fr/item/02161283/