共 11 条
[1]
Fouxe-Rabinovitch D.I., 1940, REC MATH, V8, P265
[4]
HUMPHRIES SP, 1985, Q J MATH, V36, P279
[5]
KALIA RN, 1984, ADV MATH, V33, P308
[6]
Lyndon R. C., 1963, MATH SCAND, V12, P209
[7]
Lyndon R. C., 1977, COMBINATORIAL GROUP
[10]
ZIESCHANG H, 1983, T MATH I ACAD SCI US, V154, P284