共 9 条
[1]
BLUMENTHAL LM, 1955, PAC J MATH, V5, P161
[2]
Day M. M, 1959, P AM MATH SOC, V10, P92, DOI [10.2307/2032894, DOI 10.2307/2032894]
[5]
[6]
RUBIN H, 1953, P AM MATH SOC, V4, P611
[8]
WILSON WA, 1932, AM J MATH, V54, P505
[9]
[No title captured]

