共 7 条
[1]
[Anonymous], 1985, INTERVAL ORDERS INTE
[4]
Erdos P., 1935, COMPOS MATH, V2, P463
[6]
SEIDENBERG A, 1959, J LOND MATH SOC, V34, P32
[7]
Trotter W. T. Jr., 1976, Discrete Mathematics, V16, P71, DOI 10.1016/0012-365X(76)90095-9