@article{10_37236_1755,
     author = {Jerrold Griggs and Charles E. Killian and Carla D. Savage},
     title = {Venn diagrams and symmetric chain decompositions in the {Boolean} lattice},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {1},
     doi = {10.37236/1755},
     zbl = {1034.06001},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1755/}
}