Penny E. Haxell. Atoms of set systems with a fixed number of pairwise unions. Discrete Mathematics, 150(1-3):155-166, 1996. [doi]
@article{Haxell96, title = {Atoms of set systems with a fixed number of pairwise unions}, author = {Penny E. Haxell}, year = {1996}, doi = {10.1016/0012-365X(95)00184-X}, url = {http://dx.doi.org/10.1016/0012-365X(95)00184-X}, tags = {e-science}, researchr = {https://researchr.org/publication/Haxell96}, cites = {0}, citedby = {0}, journal = {Discrete Mathematics}, volume = {150}, number = {1-3}, pages = {155-166}, }