@article{10_37236_582,
     author = {Victor Falgas-Ravry},
     title = {Minimal weight in union-closed families},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {1},
     doi = {10.37236/582},
     zbl = {1220.05127},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/582/}
}