共 36 条
[1]
[Anonymous], 1964, IZV AKAD NAUK SSSR M
[5]
BORSUK K, 1938, FUND MATH, V31, P137
[6]
BROWDER K, 1972, ERGEB MATH
[8]
Cohen Marshall M., 1973, Graduate Texts in Mathematics, V10
[9]
FOX RH, 1947, FUND MATH, V34, P278
[10]
Freedman M, 1990, Princeton Mathematical Series, V39