共 6 条
- [1] BALZAC H, 1849, CENT CONTES DROLATIQ, V4, P9
- [2] REPRESENTATIONS OF SEQUENCES OF SETS [J]. AMERICAN JOURNAL OF MATHEMATICS, 1949, 71 (02) : 287 - 293
- [3] Frink Jr O., 1941, B AM MATH SOC, V47, P612, DOI 10.1090/S0002-9904-1941-07522-1
- [5] Hall P., 1935, J LONDON MATH SOC, V1, P26, DOI DOI 10.1112/JLMS/S1-10.37.26