@article{10_37236_10121,
     author = {David Ellis},
     title = {Union-closed families with small average overlap densities},
     journal = {The electronic journal of combinatorics},
     year = {2022},
     volume = {29},
     number = {1},
     doi = {10.37236/10121},
     zbl = {1481.05151},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/10121/}
}