共 30 条
[1]
Bj~orner A., 1985, NOTICES AM MATH SOC, V32, P339
[3]
Bjorner A., 1983, EUR J COMBIN, V4, P11
[5]
Crapo H. H., 1966, J COMBINATORIAL THEO, V1, P126
[7]
FOLKMAN J, 1966, J MATH MECH, V15, P631
[8]
Garst Peter Freedman, 1979, THESIS U WISCONSIN M
[9]
Gaschutz W., 1959, ILLINOIS J MATH, V3, P469