共 15 条
[2]
Baer R, 1928, J REINE ANGEW MATH, V159, P101
[3]
Baer R, 1927, J REINE ANGEW MATH, V156, P231
[4]
BRODEL W, 1937, SACHSISCHE AKAD W MP, V87, P85
[6]
FORT MK, 1962, TOPOLOGY 3MANIFOL ED
[7]
HUDSON JFP, 1964, PUBL MATH-PARIS, V19, P69
[8]
Levine H.I, 1963, P AM MATH SOC, V14, P986
[10]
Newman M. H. A., 1961, ELEMENTS TOPOLOGY PL