@article{10_37236_1559,
     author = {E. Rodney Canfield},
     title = {Meet and join within the lattice of set partitions},
     journal = {The electronic journal of combinatorics},
     year = {2001},
     volume = {8},
     number = {1},
     doi = {10.37236/1559},
     zbl = {0970.05011},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1559/}
}