共 14 条
[1]
DEHN M, 1910, MATH ANN, V69, P147
[2]
EILENBERG S, 1937, FUNDAMENTA MATH, V28, P241
[3]
HIGMAN G, 1948, Q J MATH OXFORD, V29, P117
[4]
HUREWICZ W, 1936, P ACAD SCI AMSTERDAM, V39, P216
[5]
JOHANSSON I, 1935, MATH ANN, V110, P319
[7]
KNESER H, 1929, JB DEUT MATH VEREIN, V38, P260
[10]
PAPAKYRIAKOPOUL.CD, 1955, ANN MATH, V62, P298