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@article{IM_1989__98_1_143740, author = {J.A. Rush}, title = {A lower bound on packing density.}, journal = {Inventiones mathematicae}, pages = {499--510}, publisher = {mathdoc}, volume = {98}, number = {1}, year = {1989}, zbl = {0659.10033}, url = {http://geodesic.mathdoc.fr/item/IM_1989__98_1_143740/} }
J.A. Rush. A lower bound on packing density.. Inventiones mathematicae, Tome 98 (1989) no. 1, pp. 499-510. http://geodesic.mathdoc.fr/item/IM_1989__98_1_143740/