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@article{DM_1989_1_3_a4, author = {A. V. Kostochka}, title = {An upper bound on the capacity of the boundary of an antichain in an $n$-dimensional cube}, journal = {Diskretnaya Matematika}, pages = {279--288}, publisher = {mathdoc}, volume = {1}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1989_1_3_a4/} }
A. V. Kostochka. An upper bound on the capacity of the boundary of an antichain in an $n$-dimensional cube. Diskretnaya Matematika, Tome 1 (1989) no. 3, pp. 279-288. http://geodesic.mathdoc.fr/item/DM_1989_1_3_a4/