@article{10_37236_8380,
     author = {Jeffrey Matayoshi},
     title = {Well-graded families and the union-closed sets conjecture},
     journal = {The electronic journal of combinatorics},
     year = {2020},
     volume = {27},
     number = {1},
     doi = {10.37236/8380},
     zbl = {1507.05096},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/8380/}
}