@article{10_37236_884,
     author = {Peter Borg},
     title = {Intersecting and cross-intersecting families of labeled sets},
     journal = {The electronic journal of combinatorics},
     year = {2008},
     volume = {15},
     doi = {10.37236/884},
     zbl = {1160.05339},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/884/}
}