共 17 条
[2]
ALVAREZGAUME L, 1986, CERNTH461586 PREPR
[3]
Armstrong M.A., 1983, BASIC TOPOLOGY
[4]
Atiyah M. F., 1964, TOPOLOGY S1, V3, P3, DOI [DOI 10.1016/0040-9383(64)90003-5, 10.1016/0040-9383(64)90003-5]