共 9 条
- [1] Quasigroups. I [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1943, 54 (1-3) : 507 - 519
- [2] Quasigroups. II [J]. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY, 1944, 55 (1-3) : 401 - 419
- [4] ECKMANN B, 1946, COMMENT MATH HELV, V18, P232
- [6] RELATIONS BETWEEN HOMOLOGY AND HOMOTOPY GROUPS OF SPACES [J]. ANNALS OF MATHEMATICS, 1945, 46 (03) : 480 - 509
- [9] SMILEY MF, 1944, B AM MATH SOC, V50, P782