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| year = 1987 | doi=10.2307/2000598| doi-access = free}}.
[[Category:Extremal combinatorics]]
[[Category:Combinatorics|*]]
[[Category:Combinatorial optimization]]
|
Line 38:
| year = 1987 | doi=10.2307/2000598| doi-access = free}}.
[[Category:Extremal combinatorics]]
[[Category:Combinatorics|*]]
[[Category:Combinatorial optimization]]
|