共 5 条
[1]
CHVATAL V, 1974, LECTURE NOTES MATH, P61
[2]
CHVATAL V, SELECTED COMBINATORI
[3]
Kleitman D. J., 1974, Journal of Combinatorial Theory, Series A, V16, P215, DOI 10.1016/0097-3165(74)90046-6
[4]
SCHONHEIM J, 1973, P BRIT COMB C ABERYS, P139
[5]
SCHONHEIM J, 1975, 5TH P BRIT COMB C, P537