Irreducible hypergraphs for Hall-type conditions, and arc-minimal digraph expanders

Alexandr V. Kostochka, Douglas R. Woodall. Irreducible hypergraphs for Hall-type conditions, and arc-minimal digraph expanders. Eur. J. Comb., 26(7):1119-1138, 2005. [doi]

Authors

Alexandr V. Kostochka

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Douglas R. Woodall

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