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@article{IM_1991__104_1_143895, author = {Keith Ball}, title = {The plank problem for symmetric bodies.}, journal = {Inventiones mathematicae}, pages = {535--544}, publisher = {mathdoc}, volume = {104}, number = {1}, year = {1991}, zbl = {0702.52003}, url = {http://geodesic.mathdoc.fr/item/IM_1991__104_1_143895/} }
Keith Ball. The plank problem for symmetric bodies.. Inventiones mathematicae, Tome 104 (1991) no. 1, pp. 535-544. http://geodesic.mathdoc.fr/item/IM_1991__104_1_143895/