@article{10_37236_1590,
     author = {D. de Caen},
     title = {A note on the ranks of set-inclusion matrices},
     journal = {The electronic journal of combinatorics},
     year = {2001},
     volume = {8},
     number = {1},
     doi = {10.37236/1590},
     zbl = {0976.15003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1590/}
}