共 5 条
[1]
BOURBAKI N, 1966, GENERAL TOPOLOGY 1, pCH2
[2]
HALL DW, 1955, ELEMENTARY TOPOLOGY
[3]
Henriksen M., 1957, ILLINOIS J MATH, V1, P574, DOI [10.1215/ijm/1255380680, DOI 10.1215/IJM/1255380680]
[4]
WALLACE AD, 1951, T AM MATH SOC, V70, P97
[5]
WHYBURN G, 1963, ANALYTIC TOPOLOGY