@article{10_37236_231,
     author = {Boris Bukh},
     title = {Set families with a forbidden subposet},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/231},
     zbl = {1190.06004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/231/}
}