@article{02038348,
title = {Venn diagrams and symmetric chain decompositions in the Boolean lattice.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {11},
year = {2004},
zbl = {1034.06001},
language = {en},
url = {http://dml.mathdoc.fr/item/02038348}
}
Griggs, Jerrold; Killian, Charles E.; Savage, Carla D. Venn diagrams and symmetric chain decompositions in the Boolean lattice.. The Electronic Journal of Combinatorics [electronic only], Tome 11 (2004) . http://gdmltest.u-ga.fr/item/02038348/