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@article{DA_1995_2_3_a3, author = {B. List}, title = {A~vertex variant of the {Kleitman--West} problem}, journal = {Diskretnyj analiz i issledovanie operacij}, pages = {24--48}, publisher = {mathdoc}, volume = {2}, number = {3}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DA_1995_2_3_a3/} }
B. List. A~vertex variant of the Kleitman--West problem. Diskretnyj analiz i issledovanie operacij, Tome 2 (1995) no. 3, pp. 24-48. http://geodesic.mathdoc.fr/item/DA_1995_2_3_a3/