@article{10_37236_1382,
     author = {Bette Bultena and Frank Ruskey},
     title = {Venn diagrams with few vertices},
     journal = {The electronic journal of combinatorics},
     year = {1998},
     volume = {5},
     doi = {10.37236/1382},
     zbl = {0902.05018},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1382/}
}