共 11 条
[1]
Cech E., 1966, TOPOLOGICAL SPACES
[2]
Dugundji J., 1966, TOPOLOGY
[6]
NOVAK J, 1948, CAS PEST MAT FYS, V73, P58
[7]
Steen L. A., 1970, COUNTEREXAMPLES TOPO, V1st
[10]
VAIDYANATHASWAM.R, 1947, TREATISE SET TOPOLOG